Home / 13,680.16-20,507.82-7,098.64

Finding the Fourth Proportional to 13,680.16, 20,507.82 and 7,098.64

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Solution

The fourth proportional to 13,680.16, 20,507.82 and 7,098.64 is: 10,641.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.16 : 20,507.82 = 7,098.64 : x
  2. Step 2: Convert to fraction form
    13,680.16/20,507.82 = 7,098.64/x
  3. Step 3: Cross multiply
    13,680.16x = 20,507.82 × 7,098.64
  4. Step 4: Simplify right side
    13,680.16x = 145,577,631.36
  5. Step 5: Solve for x
    x = 145,577,631.36/13,680.16
  6. Step 6: Final answer
    x = 10,641.52

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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.