Home / 13,555.42-18,689.61-10,372.66

Finding the Fourth Proportional to 13,555.42, 18,689.61 and 10,372.66

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Solution

The fourth proportional to 13,555.42, 18,689.61 and 10,372.66 is: 14,301.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.42 : 18,689.61 = 10,372.66 : x
  2. Step 2: Convert to fraction form
    13,555.42/18,689.61 = 10,372.66/x
  3. Step 3: Cross multiply
    13,555.42x = 18,689.61 × 10,372.66
  4. Step 4: Simplify right side
    13,555.42x = 193,860,970.06
  5. Step 5: Solve for x
    x = 193,860,970.06/13,555.42
  6. Step 6: Final answer
    x = 14,301.36

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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.