Home / 28,312.80-42,474.30-11,663.73

Finding the Fourth Proportional to 28,312.80, 42,474.30 and 11,663.73

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Solution

The fourth proportional to 28,312.80, 42,474.30 and 11,663.73 is: 17,497.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,312.80 : 42,474.30 = 11,663.73 : x
  2. Step 2: Convert to fraction form
    28,312.80/42,474.30 = 11,663.73/x
  3. Step 3: Cross multiply
    28,312.80x = 42,474.30 × 11,663.73
  4. Step 4: Simplify right side
    28,312.80x = 495,408,767.14
  5. Step 5: Solve for x
    x = 495,408,767.14/28,312.80
  6. Step 6: Final answer
    x = 17,497.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.