Home / 15,781.66-23,675.86-4,689.11

Finding the Fourth Proportional to 15,781.66, 23,675.86 and 4,689.11

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Solution

The fourth proportional to 15,781.66, 23,675.86 and 4,689.11 is: 7,034.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781.66 : 23,675.86 = 4,689.11 : x
  2. Step 2: Convert to fraction form
    15,781.66/23,675.86 = 4,689.11/x
  3. Step 3: Cross multiply
    15,781.66x = 23,675.86 × 4,689.11
  4. Step 4: Simplify right side
    15,781.66x = 111,018,711.88
  5. Step 5: Solve for x
    x = 111,018,711.88/15,781.66
  6. Step 6: Final answer
    x = 7,034.67

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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.