Home / 21,585.03-29,787.28-12,153.61

Finding the Fourth Proportional to 21,585.03, 29,787.28 and 12,153.61

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Solution

The fourth proportional to 21,585.03, 29,787.28 and 12,153.61 is: 16,771.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.03 : 29,787.28 = 12,153.61 : x
  2. Step 2: Convert to fraction form
    21,585.03/29,787.28 = 12,153.61/x
  3. Step 3: Cross multiply
    21,585.03x = 29,787.28 × 12,153.61
  4. Step 4: Simplify right side
    21,585.03x = 362,022,984.08
  5. Step 5: Solve for x
    x = 362,022,984.08/21,585.03
  6. Step 6: Final answer
    x = 16,771.95

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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.