Home / 13,434.18-18,534.60-7,767.42

Finding the Fourth Proportional to 13,434.18, 18,534.60 and 7,767.42

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Solution

The fourth proportional to 13,434.18, 18,534.60 and 7,767.42 is: 10,716.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.18 : 18,534.60 = 7,767.42 : x
  2. Step 2: Convert to fraction form
    13,434.18/18,534.60 = 7,767.42/x
  3. Step 3: Cross multiply
    13,434.18x = 18,534.60 × 7,767.42
  4. Step 4: Simplify right side
    13,434.18x = 143,966,022.73
  5. Step 5: Solve for x
    x = 143,966,022.73/13,434.18
  6. Step 6: Final answer
    x = 10,716.40

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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.