Home / 13,729.73-18,948.20-7,762.46

Finding the Fourth Proportional to 13,729.73, 18,948.20 and 7,762.46

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Solution

The fourth proportional to 13,729.73, 18,948.20 and 7,762.46 is: 10,712.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.73 : 18,948.20 = 7,762.46 : x
  2. Step 2: Convert to fraction form
    13,729.73/18,948.20 = 7,762.46/x
  3. Step 3: Cross multiply
    13,729.73x = 18,948.20 × 7,762.46
  4. Step 4: Simplify right side
    13,729.73x = 147,084,511.02
  5. Step 5: Solve for x
    x = 147,084,511.02/13,729.73
  6. Step 6: Final answer
    x = 10,712.85

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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.