Home / 13,551.78-18,700.85-7,502.25

Finding the Fourth Proportional to 13,551.78, 18,700.85 and 7,502.25

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Solution

The fourth proportional to 13,551.78, 18,700.85 and 7,502.25 is: 10,352.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.78 : 18,700.85 = 7,502.25 : x
  2. Step 2: Convert to fraction form
    13,551.78/18,700.85 = 7,502.25/x
  3. Step 3: Cross multiply
    13,551.78x = 18,700.85 × 7,502.25
  4. Step 4: Simplify right side
    13,551.78x = 140,298,540.80
  5. Step 5: Solve for x
    x = 140,298,540.80/13,551.78
  6. Step 6: Final answer
    x = 10,352.77

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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.