Home / 21,490.14-29,656.98-12,059.28

Finding the Fourth Proportional to 21,490.14, 29,656.98 and 12,059.28

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Solution

The fourth proportional to 21,490.14, 29,656.98 and 12,059.28 is: 16,642.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,490.14 : 29,656.98 = 12,059.28 : x
  2. Step 2: Convert to fraction form
    21,490.14/29,656.98 = 12,059.28/x
  3. Step 3: Cross multiply
    21,490.14x = 29,656.98 × 12,059.28
  4. Step 4: Simplify right side
    21,490.14x = 357,641,825.77
  5. Step 5: Solve for x
    x = 357,641,825.77/21,490.14
  6. Step 6: Final answer
    x = 16,642.14

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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.