Home / 31,479.36-47,127.52-18,291.52

Finding the Fourth Proportional to 31,479.36, 47,127.52 and 18,291.52

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Solution

The fourth proportional to 31,479.36, 47,127.52 and 18,291.52 is: 27,384.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,479.36 : 47,127.52 = 18,291.52 : x
  2. Step 2: Convert to fraction form
    31,479.36/47,127.52 = 18,291.52/x
  3. Step 3: Cross multiply
    31,479.36x = 47,127.52 × 18,291.52
  4. Step 4: Simplify right side
    31,479.36x = 862,033,974.63
  5. Step 5: Solve for x
    x = 862,033,974.63/31,479.36
  6. Step 6: Final answer
    x = 27,384.10

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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.