Home / 21,490.64-29,657.59-12,059.90

Finding the Fourth Proportional to 21,490.64, 29,657.59 and 12,059.90

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Solution

The fourth proportional to 21,490.64, 29,657.59 and 12,059.90 is: 16,642.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,490.64 : 29,657.59 = 12,059.90 : x
  2. Step 2: Convert to fraction form
    21,490.64/29,657.59 = 12,059.90/x
  3. Step 3: Cross multiply
    21,490.64x = 29,657.59 × 12,059.90
  4. Step 4: Simplify right side
    21,490.64x = 357,667,569.64
  5. Step 5: Solve for x
    x = 357,667,569.64/21,490.64
  6. Step 6: Final answer
    x = 16,642.95

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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.