Home / 13,543.98-18,691.61-7,576.20

Finding the Fourth Proportional to 13,543.98, 18,691.61 and 7,576.20

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Solution

The fourth proportional to 13,543.98, 18,691.61 and 7,576.20 is: 10,455.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.98 : 18,691.61 = 7,576.20 : x
  2. Step 2: Convert to fraction form
    13,543.98/18,691.61 = 7,576.20/x
  3. Step 3: Cross multiply
    13,543.98x = 18,691.61 × 7,576.20
  4. Step 4: Simplify right side
    13,543.98x = 141,611,337.80
  5. Step 5: Solve for x
    x = 141,611,337.80/13,543.98
  6. Step 6: Final answer
    x = 10,455.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.