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Finding the Fourth Proportional to 12,700.16, 17,535.36 and 8,230.40

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Solution

The fourth proportional to 12,700.16, 17,535.36 and 8,230.40 is: 11,363.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.16 : 17,535.36 = 8,230.40 : x
  2. Step 2: Convert to fraction form
    12,700.16/17,535.36 = 8,230.40/x
  3. Step 3: Cross multiply
    12,700.16x = 17,535.36 × 8,230.40
  4. Step 4: Simplify right side
    12,700.16x = 144,323,026.94
  5. Step 5: Solve for x
    x = 144,323,026.94/12,700.16
  6. Step 6: Final answer
    x = 11,363.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.