Home / 25,787.19-38,706.86-13,316.12

Finding the Fourth Proportional to 25,787.19, 38,706.86 and 13,316.12

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Solution

The fourth proportional to 25,787.19, 38,706.86 and 13,316.12 is: 19,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,787.19 : 38,706.86 = 13,316.12 : x
  2. Step 2: Convert to fraction form
    25,787.19/38,706.86 = 13,316.12/x
  3. Step 3: Cross multiply
    25,787.19x = 38,706.86 × 13,316.12
  4. Step 4: Simplify right side
    25,787.19x = 515,425,286.35
  5. Step 5: Solve for x
    x = 515,425,286.35/25,787.19
  6. Step 6: Final answer
    x = 19,987.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.