Home / 31,988.70-44,103.18-21,899.76

Finding the Fourth Proportional to 31,988.70, 44,103.18 and 21,899.76

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Solution

The fourth proportional to 31,988.70, 44,103.18 and 21,899.76 is: 30,193.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,988.70 : 44,103.18 = 21,899.76 : x
  2. Step 2: Convert to fraction form
    31,988.70/44,103.18 = 21,899.76/x
  3. Step 3: Cross multiply
    31,988.70x = 44,103.18 × 21,899.76
  4. Step 4: Simplify right side
    31,988.70x = 965,849,057.24
  5. Step 5: Solve for x
    x = 965,849,057.24/31,988.70
  6. Step 6: Final answer
    x = 30,193.45

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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.