Home / 43,129.40-64,700.10-13,549.55

Finding the Fourth Proportional to 43,129.40, 64,700.10 and 13,549.55

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Solution

The fourth proportional to 43,129.40, 64,700.10 and 13,549.55 is: 20,326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,129.40 : 64,700.10 = 13,549.55 : x
  2. Step 2: Convert to fraction form
    43,129.40/64,700.10 = 13,549.55/x
  3. Step 3: Cross multiply
    43,129.40x = 64,700.10 × 13,549.55
  4. Step 4: Simplify right side
    43,129.40x = 876,656,916.45
  5. Step 5: Solve for x
    x = 876,656,916.45/43,129.40
  6. Step 6: Final answer
    x = 20,326.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.