Home / 29,218.95-40,322.17-15,790.20

Finding the Fourth Proportional to 29,218.95, 40,322.17 and 15,790.20

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Solution

The fourth proportional to 29,218.95, 40,322.17 and 15,790.20 is: 21,790.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,218.95 : 40,322.17 = 15,790.20 : x
  2. Step 2: Convert to fraction form
    29,218.95/40,322.17 = 15,790.20/x
  3. Step 3: Cross multiply
    29,218.95x = 40,322.17 × 15,790.20
  4. Step 4: Simplify right side
    29,218.95x = 636,695,190.06
  5. Step 5: Solve for x
    x = 636,695,190.06/29,218.95
  6. Step 6: Final answer
    x = 21,790.49

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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.