Home / 19,385.40-26,752.10-11,427.15

Finding the Fourth Proportional to 19,385.40, 26,752.10 and 11,427.15

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Solution

The fourth proportional to 19,385.40, 26,752.10 and 11,427.15 is: 15,769.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,385.40 : 26,752.10 = 11,427.15 : x
  2. Step 2: Convert to fraction form
    19,385.40/26,752.10 = 11,427.15/x
  3. Step 3: Cross multiply
    19,385.40x = 26,752.10 × 11,427.15
  4. Step 4: Simplify right side
    19,385.40x = 305,700,202.38
  5. Step 5: Solve for x
    x = 305,700,202.38/19,385.40
  6. Step 6: Final answer
    x = 15,769.61

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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.