Home / 10,691.10-16,036.65-9,783.90

Finding the Fourth Proportional to 10,691.10, 16,036.65 and 9,783.90

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Solution

The fourth proportional to 10,691.10, 16,036.65 and 9,783.90 is: 14,675.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,691.10 : 16,036.65 = 9,783.90 : x
  2. Step 2: Convert to fraction form
    10,691.10/16,036.65 = 9,783.90/x
  3. Step 3: Cross multiply
    10,691.10x = 16,036.65 × 9,783.90
  4. Step 4: Simplify right side
    10,691.10x = 156,900,979.94
  5. Step 5: Solve for x
    x = 156,900,979.94/10,691.10
  6. Step 6: Final answer
    x = 14,675.85

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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.