Home / 20,444.95-28,187.97-13,719.91

Finding the Fourth Proportional to 20,444.95, 28,187.97 and 13,719.91

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Solution

The fourth proportional to 20,444.95, 28,187.97 and 13,719.91 is: 18,915.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,444.95 : 28,187.97 = 13,719.91 : x
  2. Step 2: Convert to fraction form
    20,444.95/28,187.97 = 13,719.91/x
  3. Step 3: Cross multiply
    20,444.95x = 28,187.97 × 13,719.91
  4. Step 4: Simplify right side
    20,444.95x = 386,736,411.48
  5. Step 5: Solve for x
    x = 386,736,411.48/20,444.95
  6. Step 6: Final answer
    x = 18,915.99

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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.