Home / 18,990.82-26,182.98-15,575.32

Finding the Fourth Proportional to 18,990.82, 26,182.98 and 15,575.32

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Solution

The fourth proportional to 18,990.82, 26,182.98 and 15,575.32 is: 21,473.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.82 : 26,182.98 = 15,575.32 : x
  2. Step 2: Convert to fraction form
    18,990.82/26,182.98 = 15,575.32/x
  3. Step 3: Cross multiply
    18,990.82x = 26,182.98 × 15,575.32
  4. Step 4: Simplify right side
    18,990.82x = 407,808,292.05
  5. Step 5: Solve for x
    x = 407,808,292.05/18,990.82
  6. Step 6: Final answer
    x = 21,473.97

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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.