Home / 39,437.40-54,423.72-21,532.80

Finding the Fourth Proportional to 39,437.40, 54,423.72 and 21,532.80

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Solution

The fourth proportional to 39,437.40, 54,423.72 and 21,532.80 is: 29,715.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,437.40 : 54,423.72 = 21,532.80 : x
  2. Step 2: Convert to fraction form
    39,437.40/54,423.72 = 21,532.80/x
  3. Step 3: Cross multiply
    39,437.40x = 54,423.72 × 21,532.80
  4. Step 4: Simplify right side
    39,437.40x = 1,171,895,078.02
  5. Step 5: Solve for x
    x = 1,171,895,078.02/39,437.40
  6. Step 6: Final answer
    x = 29,715.32

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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.