Home / 23,142.90-31,937.31-13,071.47

Finding the Fourth Proportional to 23,142.90, 31,937.31 and 13,071.47

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Solution

The fourth proportional to 23,142.90, 31,937.31 and 13,071.47 is: 18,038.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,142.90 : 31,937.31 = 13,071.47 : x
  2. Step 2: Convert to fraction form
    23,142.90/31,937.31 = 13,071.47/x
  3. Step 3: Cross multiply
    23,142.90x = 31,937.31 × 13,071.47
  4. Step 4: Simplify right side
    23,142.90x = 417,467,429.86
  5. Step 5: Solve for x
    x = 417,467,429.86/23,142.90
  6. Step 6: Final answer
    x = 18,038.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.