Home / 13,441.60-18,545.52-9,189.10

Finding the Fourth Proportional to 13,441.60, 18,545.52 and 9,189.10

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Solution

The fourth proportional to 13,441.60, 18,545.52 and 9,189.10 is: 12,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,441.60 : 18,545.52 = 9,189.10 : x
  2. Step 2: Convert to fraction form
    13,441.60/18,545.52 = 9,189.10/x
  3. Step 3: Cross multiply
    13,441.60x = 18,545.52 × 9,189.10
  4. Step 4: Simplify right side
    13,441.60x = 170,416,637.83
  5. Step 5: Solve for x
    x = 170,416,637.83/13,441.60
  6. Step 6: Final answer
    x = 12,678.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.