Home / 31,719.48-47,542.38-11,985.48

Finding the Fourth Proportional to 31,719.48, 47,542.38 and 11,985.48

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Solution

The fourth proportional to 31,719.48, 47,542.38 and 11,985.48 is: 17,964.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,719.48 : 47,542.38 = 11,985.48 : x
  2. Step 2: Convert to fraction form
    31,719.48/47,542.38 = 11,985.48/x
  3. Step 3: Cross multiply
    31,719.48x = 47,542.38 × 11,985.48
  4. Step 4: Simplify right side
    31,719.48x = 569,818,244.64
  5. Step 5: Solve for x
    x = 569,818,244.64/31,719.48
  6. Step 6: Final answer
    x = 17,964.30

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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.