Home / 13,761.86-18,972.95-10,938.60

Finding the Fourth Proportional to 13,761.86, 18,972.95 and 10,938.60

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Solution

The fourth proportional to 13,761.86, 18,972.95 and 10,938.60 is: 15,080.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.86 : 18,972.95 = 10,938.60 : x
  2. Step 2: Convert to fraction form
    13,761.86/18,972.95 = 10,938.60/x
  3. Step 3: Cross multiply
    13,761.86x = 18,972.95 × 10,938.60
  4. Step 4: Simplify right side
    13,761.86x = 207,537,456.18
  5. Step 5: Solve for x
    x = 207,537,456.18/13,761.86
  6. Step 6: Final answer
    x = 15,080.63

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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.