Home / 18,870.72-26,040.32-10,372.65

Finding the Fourth Proportional to 18,870.72, 26,040.32 and 10,372.65

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Solution

The fourth proportional to 18,870.72, 26,040.32 and 10,372.65 is: 14,313.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.72 : 26,040.32 = 10,372.65 : x
  2. Step 2: Convert to fraction form
    18,870.72/26,040.32 = 10,372.65/x
  3. Step 3: Cross multiply
    18,870.72x = 26,040.32 × 10,372.65
  4. Step 4: Simplify right side
    18,870.72x = 270,107,073.38
  5. Step 5: Solve for x
    x = 270,107,073.38/18,870.72
  6. Step 6: Final answer
    x = 14,313.55

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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.