Home / 12,135.48-16,752.13-8,158.90

Finding the Fourth Proportional to 12,135.48, 16,752.13 and 8,158.90

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Solution

The fourth proportional to 12,135.48, 16,752.13 and 8,158.90 is: 11,262.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.48 : 16,752.13 = 8,158.90 : x
  2. Step 2: Convert to fraction form
    12,135.48/16,752.13 = 8,158.90/x
  3. Step 3: Cross multiply
    12,135.48x = 16,752.13 × 8,158.90
  4. Step 4: Simplify right side
    12,135.48x = 136,678,953.46
  5. Step 5: Solve for x
    x = 136,678,953.46/12,135.48
  6. Step 6: Final answer
    x = 11,262.76

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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.