Home / 13,488.96-20,233.28-7,980.16

Finding the Fourth Proportional to 13,488.96, 20,233.28 and 7,980.16

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Solution

The fourth proportional to 13,488.96, 20,233.28 and 7,980.16 is: 11,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.96 : 20,233.28 = 7,980.16 : x
  2. Step 2: Convert to fraction form
    13,488.96/20,233.28 = 7,980.16/x
  3. Step 3: Cross multiply
    13,488.96x = 20,233.28 × 7,980.16
  4. Step 4: Simplify right side
    13,488.96x = 161,464,811.72
  5. Step 5: Solve for x
    x = 161,464,811.72/13,488.96
  6. Step 6: Final answer
    x = 11,970.15

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.