Home / 21,140.46-29,140.29-16,657.38

Finding the Fourth Proportional to 21,140.46, 29,140.29 and 16,657.38

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Solution

The fourth proportional to 21,140.46, 29,140.29 and 16,657.38 is: 22,960.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.46 : 29,140.29 = 16,657.38 : x
  2. Step 2: Convert to fraction form
    21,140.46/29,140.29 = 16,657.38/x
  3. Step 3: Cross multiply
    21,140.46x = 29,140.29 × 16,657.38
  4. Step 4: Simplify right side
    21,140.46x = 485,400,883.84
  5. Step 5: Solve for x
    x = 485,400,883.84/21,140.46
  6. Step 6: Final answer
    x = 22,960.75

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Double scale
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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.