Home / 21,868.86-30,177.92-12,437.22

Finding the Fourth Proportional to 21,868.86, 30,177.92 and 12,437.22

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Solution

The fourth proportional to 21,868.86, 30,177.92 and 12,437.22 is: 17,162.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868.86 : 30,177.92 = 12,437.22 : x
  2. Step 2: Convert to fraction form
    21,868.86/30,177.92 = 12,437.22/x
  3. Step 3: Cross multiply
    21,868.86x = 30,177.92 × 12,437.22
  4. Step 4: Simplify right side
    21,868.86x = 375,329,461.28
  5. Step 5: Solve for x
    x = 375,329,461.28/21,868.86
  6. Step 6: Final answer
    x = 17,162.74

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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.