Home / 30,966.24-42,733.49-16,818.78

Finding the Fourth Proportional to 30,966.24, 42,733.49 and 16,818.78

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Solution

The fourth proportional to 30,966.24, 42,733.49 and 16,818.78 is: 23,209.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,966.24 : 42,733.49 = 16,818.78 : x
  2. Step 2: Convert to fraction form
    30,966.24/42,733.49 = 16,818.78/x
  3. Step 3: Cross multiply
    30,966.24x = 42,733.49 × 16,818.78
  4. Step 4: Simplify right side
    30,966.24x = 718,725,082.85
  5. Step 5: Solve for x
    x = 718,725,082.85/30,966.24
  6. Step 6: Final answer
    x = 23,209.96

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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.