Home / 13,705.28-20,560.08-4,343.12

Finding the Fourth Proportional to 13,705.28, 20,560.08 and 4,343.12

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Solution

The fourth proportional to 13,705.28, 20,560.08 and 4,343.12 is: 6,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.28 : 20,560.08 = 4,343.12 : x
  2. Step 2: Convert to fraction form
    13,705.28/20,560.08 = 4,343.12/x
  3. Step 3: Cross multiply
    13,705.28x = 20,560.08 × 4,343.12
  4. Step 4: Simplify right side
    13,705.28x = 89,294,894.65
  5. Step 5: Solve for x
    x = 89,294,894.65/13,705.28
  6. Step 6: Final answer
    x = 6,515.36

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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.