Home / 15,388.38-23,065.86-7,881.64

Finding the Fourth Proportional to 15,388.38, 23,065.86 and 7,881.64

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Solution

The fourth proportional to 15,388.38, 23,065.86 and 7,881.64 is: 11,813.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.38 : 23,065.86 = 7,881.64 : x
  2. Step 2: Convert to fraction form
    15,388.38/23,065.86 = 7,881.64/x
  3. Step 3: Cross multiply
    15,388.38x = 23,065.86 × 7,881.64
  4. Step 4: Simplify right side
    15,388.38x = 181,796,776.70
  5. Step 5: Solve for x
    x = 181,796,776.70/15,388.38
  6. Step 6: Final answer
    x = 11,813.90

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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.