Home / 13,330.64-19,995.96-7,478.48

Finding the Fourth Proportional to 13,330.64, 19,995.96 and 7,478.48

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Solution

The fourth proportional to 13,330.64, 19,995.96 and 7,478.48 is: 11,217.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.64 : 19,995.96 = 7,478.48 : x
  2. Step 2: Convert to fraction form
    13,330.64/19,995.96 = 7,478.48/x
  3. Step 3: Cross multiply
    13,330.64x = 19,995.96 × 7,478.48
  4. Step 4: Simplify right side
    13,330.64x = 149,539,386.94
  5. Step 5: Solve for x
    x = 149,539,386.94/13,330.64
  6. Step 6: Final answer
    x = 11,217.72

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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.