Home / 13,560.30-18,715.19-7,816.65

Finding the Fourth Proportional to 13,560.30, 18,715.19 and 7,816.65

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Solution

The fourth proportional to 13,560.30, 18,715.19 and 7,816.65 is: 10,788.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.30 : 18,715.19 = 7,816.65 : x
  2. Step 2: Convert to fraction form
    13,560.30/18,715.19 = 7,816.65/x
  3. Step 3: Cross multiply
    13,560.30x = 18,715.19 × 7,816.65
  4. Step 4: Simplify right side
    13,560.30x = 146,290,050.83
  5. Step 5: Solve for x
    x = 146,290,050.83/13,560.30
  6. Step 6: Final answer
    x = 10,788.11

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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.