Home / 13,750.47-18,977.19-7,782.52

Finding the Fourth Proportional to 13,750.47, 18,977.19 and 7,782.52

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Solution

The fourth proportional to 13,750.47, 18,977.19 and 7,782.52 is: 10,740.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.47 : 18,977.19 = 7,782.52 : x
  2. Step 2: Convert to fraction form
    13,750.47/18,977.19 = 7,782.52/x
  3. Step 3: Cross multiply
    13,750.47x = 18,977.19 × 7,782.52
  4. Step 4: Simplify right side
    13,750.47x = 147,690,360.72
  5. Step 5: Solve for x
    x = 147,690,360.72/13,750.47
  6. Step 6: Final answer
    x = 10,740.75

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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.