Home / 10,211.72-15,312.02-3,188.70

Finding the Fourth Proportional to 10,211.72, 15,312.02 and 3,188.70

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Solution

The fourth proportional to 10,211.72, 15,312.02 and 3,188.70 is: 4,781.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,211.72 : 15,312.02 = 3,188.70 : x
  2. Step 2: Convert to fraction form
    10,211.72/15,312.02 = 3,188.70/x
  3. Step 3: Cross multiply
    10,211.72x = 15,312.02 × 3,188.70
  4. Step 4: Simplify right side
    10,211.72x = 48,825,422.23
  5. Step 5: Solve for x
    x = 48,825,422.23/10,211.72
  6. Step 6: Final answer
    x = 4,781.31

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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.