Home / 31,460.90-47,152.47-15,870.02

Finding the Fourth Proportional to 31,460.90, 47,152.47 and 15,870.02

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Solution

The fourth proportional to 31,460.90, 47,152.47 and 15,870.02 is: 23,785.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,460.90 : 47,152.47 = 15,870.02 : x
  2. Step 2: Convert to fraction form
    31,460.90/47,152.47 = 15,870.02/x
  3. Step 3: Cross multiply
    31,460.90x = 47,152.47 × 15,870.02
  4. Step 4: Simplify right side
    31,460.90x = 748,310,641.95
  5. Step 5: Solve for x
    x = 748,310,641.95/31,460.90
  6. Step 6: Final answer
    x = 23,785.42

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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.