Home / 11,500.08-15,864.12-8,700.72

Finding the Fourth Proportional to 11,500.08, 15,864.12 and 8,700.72

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Solution

The fourth proportional to 11,500.08, 15,864.12 and 8,700.72 is: 12,002.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,500.08 : 15,864.12 = 8,700.72 : x
  2. Step 2: Convert to fraction form
    11,500.08/15,864.12 = 8,700.72/x
  3. Step 3: Cross multiply
    11,500.08x = 15,864.12 × 8,700.72
  4. Step 4: Simplify right side
    11,500.08x = 138,029,266.17
  5. Step 5: Solve for x
    x = 138,029,266.17/11,500.08
  6. Step 6: Final answer
    x = 12,002.46

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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.