Home / 31,345.74-47,021.64-9,158.61

Finding the Fourth Proportional to 31,345.74, 47,021.64 and 9,158.61

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Solution

The fourth proportional to 31,345.74, 47,021.64 and 9,158.61 is: 13,738.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,345.74 : 47,021.64 = 9,158.61 : x
  2. Step 2: Convert to fraction form
    31,345.74/47,021.64 = 9,158.61/x
  3. Step 3: Cross multiply
    31,345.74x = 47,021.64 × 9,158.61
  4. Step 4: Simplify right side
    31,345.74x = 430,652,862.32
  5. Step 5: Solve for x
    x = 430,652,862.32/31,345.74
  6. Step 6: Final answer
    x = 13,738.80

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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.