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Finding the Fourth Proportional to 12,000.40, 16,562.10 and 7,218.16

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Solution

The fourth proportional to 12,000.40, 16,562.10 and 7,218.16 is: 9,961.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.40 : 16,562.10 = 7,218.16 : x
  2. Step 2: Convert to fraction form
    12,000.40/16,562.10 = 7,218.16/x
  3. Step 3: Cross multiply
    12,000.40x = 16,562.10 × 7,218.16
  4. Step 4: Simplify right side
    12,000.40x = 119,547,887.74
  5. Step 5: Solve for x
    x = 119,547,887.74/12,000.40
  6. Step 6: Final answer
    x = 9,961.99

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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.