Home / 13,545.12-20,314.32-9,189.60

Finding the Fourth Proportional to 13,545.12, 20,314.32 and 9,189.60

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Solution

The fourth proportional to 13,545.12, 20,314.32 and 9,189.60 is: 13,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.12 : 20,314.32 = 9,189.60 : x
  2. Step 2: Convert to fraction form
    13,545.12/20,314.32 = 9,189.60/x
  3. Step 3: Cross multiply
    13,545.12x = 20,314.32 × 9,189.60
  4. Step 4: Simplify right side
    13,545.12x = 186,680,475.07
  5. Step 5: Solve for x
    x = 186,680,475.07/13,545.12
  6. Step 6: Final answer
    x = 13,782.12

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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.