Home / 13,531.25-18,673.20-7,866.11

Finding the Fourth Proportional to 13,531.25, 18,673.20 and 7,866.11

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Solution

The fourth proportional to 13,531.25, 18,673.20 and 7,866.11 is: 10,855.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.25 : 18,673.20 = 7,866.11 : x
  2. Step 2: Convert to fraction form
    13,531.25/18,673.20 = 7,866.11/x
  3. Step 3: Cross multiply
    13,531.25x = 18,673.20 × 7,866.11
  4. Step 4: Simplify right side
    13,531.25x = 146,885,445.25
  5. Step 5: Solve for x
    x = 146,885,445.25/13,531.25
  6. Step 6: Final answer
    x = 10,855.28

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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.