Home / 25,787.10-38,681.20-8,256.88

Finding the Fourth Proportional to 25,787.10, 38,681.20 and 8,256.88

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Solution

The fourth proportional to 25,787.10, 38,681.20 and 8,256.88 is: 12,385.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,787.10 : 38,681.20 = 8,256.88 : x
  2. Step 2: Convert to fraction form
    25,787.10/38,681.20 = 8,256.88/x
  3. Step 3: Cross multiply
    25,787.10x = 38,681.20 × 8,256.88
  4. Step 4: Simplify right side
    25,787.10x = 319,386,038.88
  5. Step 5: Solve for x
    x = 319,386,038.88/25,787.10
  6. Step 6: Final answer
    x = 12,385.49

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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.