Home / 13,750.95-18,976.61-7,782.62

Finding the Fourth Proportional to 13,750.95, 18,976.61 and 7,782.62

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Solution

The fourth proportional to 13,750.95, 18,976.61 and 7,782.62 is: 10,740.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.95 : 18,976.61 = 7,782.62 : x
  2. Step 2: Convert to fraction form
    13,750.95/18,976.61 = 7,782.62/x
  3. Step 3: Cross multiply
    13,750.95x = 18,976.61 × 7,782.62
  4. Step 4: Simplify right side
    13,750.95x = 147,687,811.42
  5. Step 5: Solve for x
    x = 147,687,811.42/13,750.95
  6. Step 6: Final answer
    x = 10,740.19

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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.