Home / 9,520.80-13,138.08-5,328.96

Finding the Fourth Proportional to 9,520.80, 13,138.08 and 5,328.96

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Solution

The fourth proportional to 9,520.80, 13,138.08 and 5,328.96 is: 7,353.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,520.80 : 13,138.08 = 5,328.96 : x
  2. Step 2: Convert to fraction form
    9,520.80/13,138.08 = 5,328.96/x
  3. Step 3: Cross multiply
    9,520.80x = 13,138.08 × 5,328.96
  4. Step 4: Simplify right side
    9,520.80x = 70,012,302.80
  5. Step 5: Solve for x
    x = 70,012,302.80/9,520.80
  6. Step 6: Final answer
    x = 7,353.62

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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.