Home / 20,521.47-30,788.69-8,840.19

Finding the Fourth Proportional to 20,521.47, 30,788.69 and 8,840.19

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Solution

The fourth proportional to 20,521.47, 30,788.69 and 8,840.19 is: 13,263.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.47 : 30,788.69 = 8,840.19 : x
  2. Step 2: Convert to fraction form
    20,521.47/30,788.69 = 8,840.19/x
  3. Step 3: Cross multiply
    20,521.47x = 30,788.69 × 8,840.19
  4. Step 4: Simplify right side
    20,521.47x = 272,177,825.25
  5. Step 5: Solve for x
    x = 272,177,825.25/20,521.47
  6. Step 6: Final answer
    x = 13,263.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.