Home / 21,471.12-29,630.16-12,041.28

Finding the Fourth Proportional to 21,471.12, 29,630.16 and 12,041.28

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Solution

The fourth proportional to 21,471.12, 29,630.16 and 12,041.28 is: 16,616.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,471.12 : 29,630.16 = 12,041.28 : x
  2. Step 2: Convert to fraction form
    21,471.12/29,630.16 = 12,041.28/x
  3. Step 3: Cross multiply
    21,471.12x = 29,630.16 × 12,041.28
  4. Step 4: Simplify right side
    21,471.12x = 356,785,053.00
  5. Step 5: Solve for x
    x = 356,785,053.00/21,471.12
  6. Step 6: Final answer
    x = 16,616.97

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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.