Home / 39,688.16-54,769.68-22,921.28

Finding the Fourth Proportional to 39,688.16, 54,769.68 and 22,921.28

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Solution

The fourth proportional to 39,688.16, 54,769.68 and 22,921.28 is: 31,631.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,688.16 : 54,769.68 = 22,921.28 : x
  2. Step 2: Convert to fraction form
    39,688.16/54,769.68 = 22,921.28/x
  3. Step 3: Cross multiply
    39,688.16x = 54,769.68 × 22,921.28
  4. Step 4: Simplify right side
    39,688.16x = 1,255,391,170.79
  5. Step 5: Solve for x
    x = 1,255,391,170.79/39,688.16
  6. Step 6: Final answer
    x = 31,631.38

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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.