Home / 31,430-47,134.95-10,366.10

Finding the Fourth Proportional to 31,430, 47,134.95 and 10,366.10

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Solution

The fourth proportional to 31,430, 47,134.95 and 10,366.10 is: 15,545.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,430 : 47,134.95 = 10,366.10 : x
  2. Step 2: Convert to fraction form
    31,430/47,134.95 = 10,366.10/x
  3. Step 3: Cross multiply
    31,430x = 47,134.95 × 10,366.10
  4. Step 4: Simplify right side
    31,430x = 488,605,605.20
  5. Step 5: Solve for x
    x = 488,605,605.20/31,430
  6. Step 6: Final answer
    x = 15,545.84

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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.