Home / 20,299.67-28,018.06-12,340.20

Finding the Fourth Proportional to 20,299.67, 28,018.06 and 12,340.20

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Solution

The fourth proportional to 20,299.67, 28,018.06 and 12,340.20 is: 17,032.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.67 : 28,018.06 = 12,340.20 : x
  2. Step 2: Convert to fraction form
    20,299.67/28,018.06 = 12,340.20/x
  3. Step 3: Cross multiply
    20,299.67x = 28,018.06 × 12,340.20
  4. Step 4: Simplify right side
    20,299.67x = 345,748,433.16
  5. Step 5: Solve for x
    x = 345,748,433.16/20,299.67
  6. Step 6: Final answer
    x = 17,032.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.