Home / 9,520.96-13,139-5,329.20

Finding the Fourth Proportional to 9,520.96, 13,139 and 5,329.20

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Solution

The fourth proportional to 9,520.96, 13,139 and 5,329.20 is: 7,354.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,520.96 : 13,139 = 5,329.20 : x
  2. Step 2: Convert to fraction form
    9,520.96/13,139 = 5,329.20/x
  3. Step 3: Cross multiply
    9,520.96x = 13,139 × 5,329.20
  4. Step 4: Simplify right side
    9,520.96x = 70,020,358.80
  5. Step 5: Solve for x
    x = 70,020,358.80/9,520.96
  6. Step 6: Final answer
    x = 7,354.34

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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.