Home / 31,909.68-47,848.86-18,587.21

Finding the Fourth Proportional to 31,909.68, 47,848.86 and 18,587.21

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Solution

The fourth proportional to 31,909.68, 47,848.86 and 18,587.21 is: 27,871.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,909.68 : 47,848.86 = 18,587.21 : x
  2. Step 2: Convert to fraction form
    31,909.68/47,848.86 = 18,587.21/x
  3. Step 3: Cross multiply
    31,909.68x = 47,848.86 × 18,587.21
  4. Step 4: Simplify right side
    31,909.68x = 889,376,569.84
  5. Step 5: Solve for x
    x = 889,376,569.84/31,909.68
  6. Step 6: Final answer
    x = 27,871.69

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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.