Home / 39,384.28-54,350.29-21,479.23

Finding the Fourth Proportional to 39,384.28, 54,350.29 and 21,479.23

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Solution

The fourth proportional to 39,384.28, 54,350.29 and 21,479.23 is: 29,641.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,384.28 : 54,350.29 = 21,479.23 : x
  2. Step 2: Convert to fraction form
    39,384.28/54,350.29 = 21,479.23/x
  3. Step 3: Cross multiply
    39,384.28x = 54,350.29 × 21,479.23
  4. Step 4: Simplify right side
    39,384.28x = 1,167,402,168.54
  5. Step 5: Solve for x
    x = 1,167,402,168.54/39,384.28
  6. Step 6: Final answer
    x = 29,641.33

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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.