Home / 35,120.61-52,656.31-12,931.11

Finding the Fourth Proportional to 35,120.61, 52,656.31 and 12,931.11

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Solution

The fourth proportional to 35,120.61, 52,656.31 and 12,931.11 is: 19,387.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,120.61 : 52,656.31 = 12,931.11 : x
  2. Step 2: Convert to fraction form
    35,120.61/52,656.31 = 12,931.11/x
  3. Step 3: Cross multiply
    35,120.61x = 52,656.31 × 12,931.11
  4. Step 4: Simplify right side
    35,120.61x = 680,904,536.80
  5. Step 5: Solve for x
    x = 680,904,536.80/35,120.61
  6. Step 6: Final answer
    x = 19,387.61

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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.