Home / 20,427.96-30,643.80-7,948.92

Finding the Fourth Proportional to 20,427.96, 30,643.80 and 7,948.92

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Solution

The fourth proportional to 20,427.96, 30,643.80 and 7,948.92 is: 11,924.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.96 : 30,643.80 = 7,948.92 : x
  2. Step 2: Convert to fraction form
    20,427.96/30,643.80 = 7,948.92/x
  3. Step 3: Cross multiply
    20,427.96x = 30,643.80 × 7,948.92
  4. Step 4: Simplify right side
    20,427.96x = 243,585,114.70
  5. Step 5: Solve for x
    x = 243,585,114.70/20,427.96
  6. Step 6: Final answer
    x = 11,924.10

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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.