Home / 20,328.40-30,492.60-7,182.10

Finding the Fourth Proportional to 20,328.40, 30,492.60 and 7,182.10

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Solution

The fourth proportional to 20,328.40, 30,492.60 and 7,182.10 is: 10,773.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.40 : 30,492.60 = 7,182.10 : x
  2. Step 2: Convert to fraction form
    20,328.40/30,492.60 = 7,182.10/x
  3. Step 3: Cross multiply
    20,328.40x = 30,492.60 × 7,182.10
  4. Step 4: Simplify right side
    20,328.40x = 219,000,902.46
  5. Step 5: Solve for x
    x = 219,000,902.46/20,328.40
  6. Step 6: Final answer
    x = 10,773.15

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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.