Home / 13,870.08-20,805.12-7,299.36

Finding the Fourth Proportional to 13,870.08, 20,805.12 and 7,299.36

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Solution

The fourth proportional to 13,870.08, 20,805.12 and 7,299.36 is: 10,949.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.08 : 20,805.12 = 7,299.36 : x
  2. Step 2: Convert to fraction form
    13,870.08/20,805.12 = 7,299.36/x
  3. Step 3: Cross multiply
    13,870.08x = 20,805.12 × 7,299.36
  4. Step 4: Simplify right side
    13,870.08x = 151,864,060.72
  5. Step 5: Solve for x
    x = 151,864,060.72/13,870.08
  6. Step 6: Final answer
    x = 10,949.04

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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.