Home / 21,262.59-29,340.47-12,310.70

Finding the Fourth Proportional to 21,262.59, 29,340.47 and 12,310.70

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Solution

The fourth proportional to 21,262.59, 29,340.47 and 12,310.70 is: 16,987.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262.59 : 29,340.47 = 12,310.70 : x
  2. Step 2: Convert to fraction form
    21,262.59/29,340.47 = 12,310.70/x
  3. Step 3: Cross multiply
    21,262.59x = 29,340.47 × 12,310.70
  4. Step 4: Simplify right side
    21,262.59x = 361,201,593.87
  5. Step 5: Solve for x
    x = 361,201,593.87/21,262.59
  6. Step 6: Final answer
    x = 16,987.66

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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.