Home / 31,510.08-47,272.19-11,788.81

Finding the Fourth Proportional to 31,510.08, 47,272.19 and 11,788.81

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Solution

The fourth proportional to 31,510.08, 47,272.19 and 11,788.81 is: 17,685.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,510.08 : 47,272.19 = 11,788.81 : x
  2. Step 2: Convert to fraction form
    31,510.08/47,272.19 = 11,788.81/x
  3. Step 3: Cross multiply
    31,510.08x = 47,272.19 × 11,788.81
  4. Step 4: Simplify right side
    31,510.08x = 557,282,689.07
  5. Step 5: Solve for x
    x = 557,282,689.07/31,510.08
  6. Step 6: Final answer
    x = 17,685.85

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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.