Home / 15,018.37-20,723.65-8,302.30

Finding the Fourth Proportional to 15,018.37, 20,723.65 and 8,302.30

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Solution

The fourth proportional to 15,018.37, 20,723.65 and 8,302.30 is: 11,456.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,018.37 : 20,723.65 = 8,302.30 : x
  2. Step 2: Convert to fraction form
    15,018.37/20,723.65 = 8,302.30/x
  3. Step 3: Cross multiply
    15,018.37x = 20,723.65 × 8,302.30
  4. Step 4: Simplify right side
    15,018.37x = 172,053,959.40
  5. Step 5: Solve for x
    x = 172,053,959.40/15,018.37
  6. Step 6: Final answer
    x = 11,456.23

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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.