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Finding the Fourth Proportional to 20,210.32, 30,314.40 and 7,062.40

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Solution

The fourth proportional to 20,210.32, 30,314.40 and 7,062.40 is: 10,593.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.32 : 30,314.40 = 7,062.40 : x
  2. Step 2: Convert to fraction form
    20,210.32/30,314.40 = 7,062.40/x
  3. Step 3: Cross multiply
    20,210.32x = 30,314.40 × 7,062.40
  4. Step 4: Simplify right side
    20,210.32x = 214,092,418.56
  5. Step 5: Solve for x
    x = 214,092,418.56/20,210.32
  6. Step 6: Final answer
    x = 10,593.22

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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.