Home / 10,510.90-15,764.13-3,115.42

Finding the Fourth Proportional to 10,510.90, 15,764.13 and 3,115.42

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Solution

The fourth proportional to 10,510.90, 15,764.13 and 3,115.42 is: 4,672.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,510.90 : 15,764.13 = 3,115.42 : x
  2. Step 2: Convert to fraction form
    10,510.90/15,764.13 = 3,115.42/x
  3. Step 3: Cross multiply
    10,510.90x = 15,764.13 × 3,115.42
  4. Step 4: Simplify right side
    10,510.90x = 49,111,885.88
  5. Step 5: Solve for x
    x = 49,111,885.88/10,510.90
  6. Step 6: Final answer
    x = 4,672.47

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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.