Home / 31,827.40-47,742.04-15,189.20

Finding the Fourth Proportional to 31,827.40, 47,742.04 and 15,189.20

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Solution

The fourth proportional to 31,827.40, 47,742.04 and 15,189.20 is: 22,784.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,827.40 : 47,742.04 = 15,189.20 : x
  2. Step 2: Convert to fraction form
    31,827.40/47,742.04 = 15,189.20/x
  3. Step 3: Cross multiply
    31,827.40x = 47,742.04 × 15,189.20
  4. Step 4: Simplify right side
    31,827.40x = 725,163,393.97
  5. Step 5: Solve for x
    x = 725,163,393.97/31,827.40
  6. Step 6: Final answer
    x = 22,784.25

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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.