Home / 21,078.75-29,039.20-14,693.74

Finding the Fourth Proportional to 21,078.75, 29,039.20 and 14,693.74

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Solution

The fourth proportional to 21,078.75, 29,039.20 and 14,693.74 is: 20,242.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,078.75 : 29,039.20 = 14,693.74 : x
  2. Step 2: Convert to fraction form
    21,078.75/29,039.20 = 14,693.74/x
  3. Step 3: Cross multiply
    21,078.75x = 29,039.20 × 14,693.74
  4. Step 4: Simplify right side
    21,078.75x = 426,694,356.34
  5. Step 5: Solve for x
    x = 426,694,356.34/21,078.75
  6. Step 6: Final answer
    x = 20,242.87

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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.