Home / 15,860.07-21,887.28-8,787.02

Finding the Fourth Proportional to 15,860.07, 21,887.28 and 8,787.02

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Solution

The fourth proportional to 15,860.07, 21,887.28 and 8,787.02 is: 12,126.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,860.07 : 21,887.28 = 8,787.02 : x
  2. Step 2: Convert to fraction form
    15,860.07/21,887.28 = 8,787.02/x
  3. Step 3: Cross multiply
    15,860.07x = 21,887.28 × 8,787.02
  4. Step 4: Simplify right side
    15,860.07x = 192,323,857.67
  5. Step 5: Solve for x
    x = 192,323,857.67/15,860.07
  6. Step 6: Final answer
    x = 12,126.29

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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.