Home / 31,428.08-47,149.08-10,374.64

Finding the Fourth Proportional to 31,428.08, 47,149.08 and 10,374.64

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Solution

The fourth proportional to 31,428.08, 47,149.08 and 10,374.64 is: 15,564.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,428.08 : 47,149.08 = 10,374.64 : x
  2. Step 2: Convert to fraction form
    31,428.08/47,149.08 = 10,374.64/x
  3. Step 3: Cross multiply
    31,428.08x = 47,149.08 × 10,374.64
  4. Step 4: Simplify right side
    31,428.08x = 489,154,731.33
  5. Step 5: Solve for x
    x = 489,154,731.33/31,428.08
  6. Step 6: Final answer
    x = 15,564.26

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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.