Home / 20,360.28-30,530.10-7,210.80

Finding the Fourth Proportional to 20,360.28, 30,530.10 and 7,210.80

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Solution

The fourth proportional to 20,360.28, 30,530.10 and 7,210.80 is: 10,812.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.28 : 30,530.10 = 7,210.80 : x
  2. Step 2: Convert to fraction form
    20,360.28/30,530.10 = 7,210.80/x
  3. Step 3: Cross multiply
    20,360.28x = 30,530.10 × 7,210.80
  4. Step 4: Simplify right side
    20,360.28x = 220,146,445.08
  5. Step 5: Solve for x
    x = 220,146,445.08/20,360.28
  6. Step 6: Final answer
    x = 10,812.55

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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.