Home / 31,353.16-47,031.28-12,630.66

Finding the Fourth Proportional to 31,353.16, 47,031.28 and 12,630.66

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Solution

The fourth proportional to 31,353.16, 47,031.28 and 12,630.66 is: 18,946.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,353.16 : 47,031.28 = 12,630.66 : x
  2. Step 2: Convert to fraction form
    31,353.16/47,031.28 = 12,630.66/x
  3. Step 3: Cross multiply
    31,353.16x = 47,031.28 × 12,630.66
  4. Step 4: Simplify right side
    31,353.16x = 594,035,899.10
  5. Step 5: Solve for x
    x = 594,035,899.10/31,353.16
  6. Step 6: Final answer
    x = 18,946.60

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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.