Home / 21,070.38-29,077.74-11,638.74

Finding the Fourth Proportional to 21,070.38, 29,077.74 and 11,638.74

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Solution

The fourth proportional to 21,070.38, 29,077.74 and 11,638.74 is: 16,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.38 : 29,077.74 = 11,638.74 : x
  2. Step 2: Convert to fraction form
    21,070.38/29,077.74 = 11,638.74/x
  3. Step 3: Cross multiply
    21,070.38x = 29,077.74 × 11,638.74
  4. Step 4: Simplify right side
    21,070.38x = 338,428,255.65
  5. Step 5: Solve for x
    x = 338,428,255.65/21,070.38
  6. Step 6: Final answer
    x = 16,061.80

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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.