Home / 30,233.30-45,349.95-20,902.10

Finding the Fourth Proportional to 30,233.30, 45,349.95 and 20,902.10

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Solution

The fourth proportional to 30,233.30, 45,349.95 and 20,902.10 is: 31,353.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,233.30 : 45,349.95 = 20,902.10 : x
  2. Step 2: Convert to fraction form
    30,233.30/45,349.95 = 20,902.10/x
  3. Step 3: Cross multiply
    30,233.30x = 45,349.95 × 20,902.10
  4. Step 4: Simplify right side
    30,233.30x = 947,909,189.90
  5. Step 5: Solve for x
    x = 947,909,189.90/30,233.30
  6. Step 6: Final answer
    x = 31,353.15

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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.