Home / 15,860.10-21,888.27-8,787.18

Finding the Fourth Proportional to 15,860.10, 21,888.27 and 8,787.18

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Solution

The fourth proportional to 15,860.10, 21,888.27 and 8,787.18 is: 12,127.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,860.10 : 21,888.27 = 8,787.18 : x
  2. Step 2: Convert to fraction form
    15,860.10/21,888.27 = 8,787.18/x
  3. Step 3: Cross multiply
    15,860.10x = 21,888.27 × 8,787.18
  4. Step 4: Simplify right side
    15,860.10x = 192,336,168.38
  5. Step 5: Solve for x
    x = 192,336,168.38/15,860.10
  6. Step 6: Final answer
    x = 12,127.05

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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.