Home / 15,387.96-23,074.25-7,990.37

Finding the Fourth Proportional to 15,387.96, 23,074.25 and 7,990.37

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Solution

The fourth proportional to 15,387.96, 23,074.25 and 7,990.37 is: 11,981.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,387.96 : 23,074.25 = 7,990.37 : x
  2. Step 2: Convert to fraction form
    15,387.96/23,074.25 = 7,990.37/x
  3. Step 3: Cross multiply
    15,387.96x = 23,074.25 × 7,990.37
  4. Step 4: Simplify right side
    15,387.96x = 184,371,639.65
  5. Step 5: Solve for x
    x = 184,371,639.65/15,387.96
  6. Step 6: Final answer
    x = 11,981.55

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Double scale
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Similar ratio
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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.