Home / 20,462.30-30,693.45-7,315.10

Finding the Fourth Proportional to 20,462.30, 30,693.45 and 7,315.10

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Solution

The fourth proportional to 20,462.30, 30,693.45 and 7,315.10 is: 10,972.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,462.30 : 30,693.45 = 7,315.10 : x
  2. Step 2: Convert to fraction form
    20,462.30/30,693.45 = 7,315.10/x
  3. Step 3: Cross multiply
    20,462.30x = 30,693.45 × 7,315.10
  4. Step 4: Simplify right side
    20,462.30x = 224,525,656.10
  5. Step 5: Solve for x
    x = 224,525,656.10/20,462.30
  6. Step 6: Final answer
    x = 10,972.65

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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.