Home / 39,624.52-54,681.72-21,720.28

Finding the Fourth Proportional to 39,624.52, 54,681.72 and 21,720.28

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Solution

The fourth proportional to 39,624.52, 54,681.72 and 21,720.28 is: 29,973.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,624.52 : 54,681.72 = 21,720.28 : x
  2. Step 2: Convert to fraction form
    39,624.52/54,681.72 = 21,720.28/x
  3. Step 3: Cross multiply
    39,624.52x = 54,681.72 × 21,720.28
  4. Step 4: Simplify right side
    39,624.52x = 1,187,702,269.28
  5. Step 5: Solve for x
    x = 1,187,702,269.28/39,624.52
  6. Step 6: Final answer
    x = 29,973.92

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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.