Home / 39,406.47-54,381.21-21,501.69

Finding the Fourth Proportional to 39,406.47, 54,381.21 and 21,501.69

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Solution

The fourth proportional to 39,406.47, 54,381.21 and 21,501.69 is: 29,672.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,406.47 : 54,381.21 = 21,501.69 : x
  2. Step 2: Convert to fraction form
    39,406.47/54,381.21 = 21,501.69/x
  3. Step 3: Cross multiply
    39,406.47x = 54,381.21 × 21,501.69
  4. Step 4: Simplify right side
    39,406.47x = 1,169,287,919.24
  5. Step 5: Solve for x
    x = 1,169,287,919.24/39,406.47
  6. Step 6: Final answer
    x = 29,672.49

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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.