Home / 31,353.28-47,031.48-12,630.80

Finding the Fourth Proportional to 31,353.28, 47,031.48 and 12,630.80

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Solution

The fourth proportional to 31,353.28, 47,031.48 and 12,630.80 is: 18,946.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,353.28 : 47,031.48 = 12,630.80 : x
  2. Step 2: Convert to fraction form
    31,353.28/47,031.48 = 12,630.80/x
  3. Step 3: Cross multiply
    31,353.28x = 47,031.48 × 12,630.80
  4. Step 4: Simplify right side
    31,353.28x = 594,045,335.16
  5. Step 5: Solve for x
    x = 594,045,335.16/31,353.28
  6. Step 6: Final answer
    x = 18,946.83

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1.5x scale

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.