Home / 28,077.74-38,747.42-15,331.19

Finding the Fourth Proportional to 28,077.74, 38,747.42 and 15,331.19

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Solution

The fourth proportional to 28,077.74, 38,747.42 and 15,331.19 is: 21,157.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,077.74 : 38,747.42 = 15,331.19 : x
  2. Step 2: Convert to fraction form
    28,077.74/38,747.42 = 15,331.19/x
  3. Step 3: Cross multiply
    28,077.74x = 38,747.42 × 15,331.19
  4. Step 4: Simplify right side
    28,077.74x = 594,043,787.64
  5. Step 5: Solve for x
    x = 594,043,787.64/28,077.74
  6. Step 6: Final answer
    x = 21,157.11

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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.