Home / 15,045.12-20,743.02-10,321.20

Finding the Fourth Proportional to 15,045.12, 20,743.02 and 10,321.20

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Solution

The fourth proportional to 15,045.12, 20,743.02 and 10,321.20 is: 14,230.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,045.12 : 20,743.02 = 10,321.20 : x
  2. Step 2: Convert to fraction form
    15,045.12/20,743.02 = 10,321.20/x
  3. Step 3: Cross multiply
    15,045.12x = 20,743.02 × 10,321.20
  4. Step 4: Simplify right side
    15,045.12x = 214,092,858.02
  5. Step 5: Solve for x
    x = 214,092,858.02/15,045.12
  6. Step 6: Final answer
    x = 14,230.05

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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.