Home / 28,316.80-42,480.30-11,667.73

Finding the Fourth Proportional to 28,316.80, 42,480.30 and 11,667.73

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Solution

The fourth proportional to 28,316.80, 42,480.30 and 11,667.73 is: 17,503.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.80 : 42,480.30 = 11,667.73 : x
  2. Step 2: Convert to fraction form
    28,316.80/42,480.30 = 11,667.73/x
  3. Step 3: Cross multiply
    28,316.80x = 42,480.30 × 11,667.73
  4. Step 4: Simplify right side
    28,316.80x = 495,648,670.72
  5. Step 5: Solve for x
    x = 495,648,670.72/28,316.80
  6. Step 6: Final answer
    x = 17,503.70

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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.