Home / 30,525.93-42,097.66-20,948.92

Finding the Fourth Proportional to 30,525.93, 42,097.66 and 20,948.92

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Solution

The fourth proportional to 30,525.93, 42,097.66 and 20,948.92 is: 28,890.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,525.93 : 42,097.66 = 20,948.92 : x
  2. Step 2: Convert to fraction form
    30,525.93/42,097.66 = 20,948.92/x
  3. Step 3: Cross multiply
    30,525.93x = 42,097.66 × 20,948.92
  4. Step 4: Simplify right side
    30,525.93x = 881,900,353.91
  5. Step 5: Solve for x
    x = 881,900,353.91/30,525.93
  6. Step 6: Final answer
    x = 28,890.20

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Half scale
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Double scale
Find fourth proportional to 30,526.93, 42,099.04 and 20,949.92
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.