Home / 10,417.32-15,636.78-6,978.60

Finding the Fourth Proportional to 10,417.32, 15,636.78 and 6,978.60

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Solution

The fourth proportional to 10,417.32, 15,636.78 and 6,978.60 is: 10,475.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,417.32 : 15,636.78 = 6,978.60 : x
  2. Step 2: Convert to fraction form
    10,417.32/15,636.78 = 6,978.60/x
  3. Step 3: Cross multiply
    10,417.32x = 15,636.78 × 6,978.60
  4. Step 4: Simplify right side
    10,417.32x = 109,122,832.91
  5. Step 5: Solve for x
    x = 109,122,832.91/10,417.32
  6. Step 6: Final answer
    x = 10,475.13

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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.