Home / 15,131.25-20,870.16-11,669.04

Finding the Fourth Proportional to 15,131.25, 20,870.16 and 11,669.04

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Solution

The fourth proportional to 15,131.25, 20,870.16 and 11,669.04 is: 16,094.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.25 : 20,870.16 = 11,669.04 : x
  2. Step 2: Convert to fraction form
    15,131.25/20,870.16 = 11,669.04/x
  3. Step 3: Cross multiply
    15,131.25x = 20,870.16 × 11,669.04
  4. Step 4: Simplify right side
    15,131.25x = 243,534,731.85
  5. Step 5: Solve for x
    x = 243,534,731.85/15,131.25
  6. Step 6: Final answer
    x = 16,094.82

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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.