Home / 20,143.10-30,247.05-15,218.30

Finding the Fourth Proportional to 20,143.10, 30,247.05 and 15,218.30

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Solution

The fourth proportional to 20,143.10, 30,247.05 and 15,218.30 is: 22,851.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.10 : 30,247.05 = 15,218.30 : x
  2. Step 2: Convert to fraction form
    20,143.10/30,247.05 = 15,218.30/x
  3. Step 3: Cross multiply
    20,143.10x = 30,247.05 × 15,218.30
  4. Step 4: Simplify right side
    20,143.10x = 460,308,681.02
  5. Step 5: Solve for x
    x = 460,308,681.02/20,143.10
  6. Step 6: Final answer
    x = 22,851.93

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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.