Home / 39,509.24-54,522.76-21,605.90

Finding the Fourth Proportional to 39,509.24, 54,522.76 and 21,605.90

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Solution

The fourth proportional to 39,509.24, 54,522.76 and 21,605.90 is: 29,816.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,509.24 : 54,522.76 = 21,605.90 : x
  2. Step 2: Convert to fraction form
    39,509.24/54,522.76 = 21,605.90/x
  3. Step 3: Cross multiply
    39,509.24x = 54,522.76 × 21,605.90
  4. Step 4: Simplify right side
    39,509.24x = 1,178,013,300.28
  5. Step 5: Solve for x
    x = 1,178,013,300.28/39,509.24
  6. Step 6: Final answer
    x = 29,816.15

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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.