Home / 21,060.77-29,059.45-12,327.80

Finding the Fourth Proportional to 21,060.77, 29,059.45 and 12,327.80

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Solution

The fourth proportional to 21,060.77, 29,059.45 and 12,327.80 is: 17,009.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.77 : 29,059.45 = 12,327.80 : x
  2. Step 2: Convert to fraction form
    21,060.77/29,059.45 = 12,327.80/x
  3. Step 3: Cross multiply
    21,060.77x = 29,059.45 × 12,327.80
  4. Step 4: Simplify right side
    21,060.77x = 358,239,087.71
  5. Step 5: Solve for x
    x = 358,239,087.71/21,060.77
  6. Step 6: Final answer
    x = 17,009.78

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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.