Home / 13,631.42-18,788.22-10,400.13

Finding the Fourth Proportional to 13,631.42, 18,788.22 and 10,400.13

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Solution

The fourth proportional to 13,631.42, 18,788.22 and 10,400.13 is: 14,334.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.42 : 18,788.22 = 10,400.13 : x
  2. Step 2: Convert to fraction form
    13,631.42/18,788.22 = 10,400.13/x
  3. Step 3: Cross multiply
    13,631.42x = 18,788.22 × 10,400.13
  4. Step 4: Simplify right side
    13,631.42x = 195,399,930.47
  5. Step 5: Solve for x
    x = 195,399,930.47/13,631.42
  6. Step 6: Final answer
    x = 14,334.52

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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.