Home / 9,520.40-13,138.14-5,328.68

Finding the Fourth Proportional to 9,520.40, 13,138.14 and 5,328.68

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Solution

The fourth proportional to 9,520.40, 13,138.14 and 5,328.68 is: 7,353.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,520.40 : 13,138.14 = 5,328.68 : x
  2. Step 2: Convert to fraction form
    9,520.40/13,138.14 = 5,328.68/x
  3. Step 3: Cross multiply
    9,520.40x = 13,138.14 × 5,328.68
  4. Step 4: Simplify right side
    9,520.40x = 70,008,943.86
  5. Step 5: Solve for x
    x = 70,008,943.86/9,520.40
  6. Step 6: Final answer
    x = 7,353.57

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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.