Home / 12,787.71-19,156.04-10,159.66

Finding the Fourth Proportional to 12,787.71, 19,156.04 and 10,159.66

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Solution

The fourth proportional to 12,787.71, 19,156.04 and 10,159.66 is: 15,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.71 : 19,156.04 = 10,159.66 : x
  2. Step 2: Convert to fraction form
    12,787.71/19,156.04 = 10,159.66/x
  3. Step 3: Cross multiply
    12,787.71x = 19,156.04 × 10,159.66
  4. Step 4: Simplify right side
    12,787.71x = 194,618,853.35
  5. Step 5: Solve for x
    x = 194,618,853.35/12,787.71
  6. Step 6: Final answer
    x = 15,219.21

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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.