Home / 20,787.24-28,676.40-15,113.19

Finding the Fourth Proportional to 20,787.24, 28,676.40 and 15,113.19

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Solution

The fourth proportional to 20,787.24, 28,676.40 and 15,113.19 is: 20,848.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.24 : 28,676.40 = 15,113.19 : x
  2. Step 2: Convert to fraction form
    20,787.24/28,676.40 = 15,113.19/x
  3. Step 3: Cross multiply
    20,787.24x = 28,676.40 × 15,113.19
  4. Step 4: Simplify right side
    20,787.24x = 433,391,881.72
  5. Step 5: Solve for x
    x = 433,391,881.72/20,787.24
  6. Step 6: Final answer
    x = 20,848.94

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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.