Home / 9,520.53-13,138.34-5,328.78

Finding the Fourth Proportional to 9,520.53, 13,138.34 and 5,328.78

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Solution

The fourth proportional to 9,520.53, 13,138.34 and 5,328.78 is: 7,353.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,520.53 : 13,138.34 = 5,328.78 : x
  2. Step 2: Convert to fraction form
    9,520.53/13,138.34 = 5,328.78/x
  3. Step 3: Cross multiply
    9,520.53x = 13,138.34 × 5,328.78
  4. Step 4: Simplify right side
    9,520.53x = 70,011,247.51
  5. Step 5: Solve for x
    x = 70,011,247.51/9,520.53
  6. Step 6: Final answer
    x = 7,353.72

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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.