Home / 10,321.78-15,478.75-4,394.93

Finding the Fourth Proportional to 10,321.78, 15,478.75 and 4,394.93

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Solution

The fourth proportional to 10,321.78, 15,478.75 and 4,394.93 is: 6,590.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,321.78 : 15,478.75 = 4,394.93 : x
  2. Step 2: Convert to fraction form
    10,321.78/15,478.75 = 4,394.93/x
  3. Step 3: Cross multiply
    10,321.78x = 15,478.75 × 4,394.93
  4. Step 4: Simplify right side
    10,321.78x = 68,027,926.12
  5. Step 5: Solve for x
    x = 68,027,926.12/10,321.78
  6. Step 6: Final answer
    x = 6,590.72

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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.