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Finding the Fourth Proportional to 12,630.16, 18,953.04 and 8,581.76

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Solution

The fourth proportional to 12,630.16, 18,953.04 and 8,581.76 is: 12,877.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.16 : 18,953.04 = 8,581.76 : x
  2. Step 2: Convert to fraction form
    12,630.16/18,953.04 = 8,581.76/x
  3. Step 3: Cross multiply
    12,630.16x = 18,953.04 × 8,581.76
  4. Step 4: Simplify right side
    12,630.16x = 162,650,440.55
  5. Step 5: Solve for x
    x = 162,650,440.55/12,630.16
  6. Step 6: Final answer
    x = 12,877.94

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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.