Home / 10,785.30-16,168.35-9,618.90

Finding the Fourth Proportional to 10,785.30, 16,168.35 and 9,618.90

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Solution

The fourth proportional to 10,785.30, 16,168.35 and 9,618.90 is: 14,419.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.30 : 16,168.35 = 9,618.90 : x
  2. Step 2: Convert to fraction form
    10,785.30/16,168.35 = 9,618.90/x
  3. Step 3: Cross multiply
    10,785.30x = 16,168.35 × 9,618.90
  4. Step 4: Simplify right side
    10,785.30x = 155,521,741.82
  5. Step 5: Solve for x
    x = 155,521,741.82/10,785.30
  6. Step 6: Final answer
    x = 14,419.79

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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.