Home / 39,677.28-59,400.32-20,912.64

Finding the Fourth Proportional to 39,677.28, 59,400.32 and 20,912.64

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Solution

The fourth proportional to 39,677.28, 59,400.32 and 20,912.64 is: 31,308.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,677.28 : 59,400.32 = 20,912.64 : x
  2. Step 2: Convert to fraction form
    39,677.28/59,400.32 = 20,912.64/x
  3. Step 3: Cross multiply
    39,677.28x = 59,400.32 × 20,912.64
  4. Step 4: Simplify right side
    39,677.28x = 1,242,217,508.04
  5. Step 5: Solve for x
    x = 1,242,217,508.04/39,677.28
  6. Step 6: Final answer
    x = 31,308.03

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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.