Home / 15,018.12-20,726.48-8,305.32

Finding the Fourth Proportional to 15,018.12, 20,726.48 and 8,305.32

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Solution

The fourth proportional to 15,018.12, 20,726.48 and 8,305.32 is: 11,462.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,018.12 : 20,726.48 = 8,305.32 : x
  2. Step 2: Convert to fraction form
    15,018.12/20,726.48 = 8,305.32/x
  3. Step 3: Cross multiply
    15,018.12x = 20,726.48 × 8,305.32
  4. Step 4: Simplify right side
    15,018.12x = 172,140,048.87
  5. Step 5: Solve for x
    x = 172,140,048.87/15,018.12
  6. Step 6: Final answer
    x = 11,462.16

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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.