Home / 10,830.16-16,239.12-7,134.40

Finding the Fourth Proportional to 10,830.16, 16,239.12 and 7,134.40

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Solution

The fourth proportional to 10,830.16, 16,239.12 and 7,134.40 is: 10,697.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,830.16 : 16,239.12 = 7,134.40 : x
  2. Step 2: Convert to fraction form
    10,830.16/16,239.12 = 7,134.40/x
  3. Step 3: Cross multiply
    10,830.16x = 16,239.12 × 7,134.40
  4. Step 4: Simplify right side
    10,830.16x = 115,856,377.73
  5. Step 5: Solve for x
    x = 115,856,377.73/10,830.16
  6. Step 6: Final answer
    x = 10,697.57

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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.