Home / 39,515.16-54,530.88-21,610.15

Finding the Fourth Proportional to 39,515.16, 54,530.88 and 21,610.15

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Solution

The fourth proportional to 39,515.16, 54,530.88 and 21,610.15 is: 29,821.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,515.16 : 54,530.88 = 21,610.15 : x
  2. Step 2: Convert to fraction form
    39,515.16/54,530.88 = 21,610.15/x
  3. Step 3: Cross multiply
    39,515.16x = 54,530.88 × 21,610.15
  4. Step 4: Simplify right side
    39,515.16x = 1,178,420,496.43
  5. Step 5: Solve for x
    x = 1,178,420,496.43/39,515.16
  6. Step 6: Final answer
    x = 29,821.98

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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.