Home / 13,828.35-19,082.70-7,540.74

Finding the Fourth Proportional to 13,828.35, 19,082.70 and 7,540.74

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Solution

The fourth proportional to 13,828.35, 19,082.70 and 7,540.74 is: 10,405.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.35 : 19,082.70 = 7,540.74 : x
  2. Step 2: Convert to fraction form
    13,828.35/19,082.70 = 7,540.74/x
  3. Step 3: Cross multiply
    13,828.35x = 19,082.70 × 7,540.74
  4. Step 4: Simplify right side
    13,828.35x = 143,897,679.20
  5. Step 5: Solve for x
    x = 143,897,679.20/13,828.35
  6. Step 6: Final answer
    x = 10,405.99

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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.