Home / 21,254.15-29,331.35-11,695.02

Finding the Fourth Proportional to 21,254.15, 29,331.35 and 11,695.02

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Solution

The fourth proportional to 21,254.15, 29,331.35 and 11,695.02 is: 16,139.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.15 : 29,331.35 = 11,695.02 : x
  2. Step 2: Convert to fraction form
    21,254.15/29,331.35 = 11,695.02/x
  3. Step 3: Cross multiply
    21,254.15x = 29,331.35 × 11,695.02
  4. Step 4: Simplify right side
    21,254.15x = 343,030,724.88
  5. Step 5: Solve for x
    x = 343,030,724.88/21,254.15
  6. Step 6: Final answer
    x = 16,139.47

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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.