Home / 9,711.18-13,400.55-5,518.62

Finding the Fourth Proportional to 9,711.18, 13,400.55 and 5,518.62

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Solution

The fourth proportional to 9,711.18, 13,400.55 and 5,518.62 is: 7,615.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,711.18 : 13,400.55 = 5,518.62 : x
  2. Step 2: Convert to fraction form
    9,711.18/13,400.55 = 5,518.62/x
  3. Step 3: Cross multiply
    9,711.18x = 13,400.55 × 5,518.62
  4. Step 4: Simplify right side
    9,711.18x = 73,952,543.24
  5. Step 5: Solve for x
    x = 73,952,543.24/9,711.18
  6. Step 6: Final answer
    x = 7,615.20

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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.