Home / 19,115.75-26,378.81-10,618.42

Finding the Fourth Proportional to 19,115.75, 26,378.81 and 10,618.42

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Solution

The fourth proportional to 19,115.75, 26,378.81 and 10,618.42 is: 14,652.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.75 : 26,378.81 = 10,618.42 : x
  2. Step 2: Convert to fraction form
    19,115.75/26,378.81 = 10,618.42/x
  3. Step 3: Cross multiply
    19,115.75x = 26,378.81 × 10,618.42
  4. Step 4: Simplify right side
    19,115.75x = 280,101,239.46
  5. Step 5: Solve for x
    x = 280,101,239.46/19,115.75
  6. Step 6: Final answer
    x = 14,652.91

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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.