Home / 13,758.07-18,986.11-7,470.44

Finding the Fourth Proportional to 13,758.07, 18,986.11 and 7,470.44

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Solution

The fourth proportional to 13,758.07, 18,986.11 and 7,470.44 is: 10,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.07 : 18,986.11 = 7,470.44 : x
  2. Step 2: Convert to fraction form
    13,758.07/18,986.11 = 7,470.44/x
  3. Step 3: Cross multiply
    13,758.07x = 18,986.11 × 7,470.44
  4. Step 4: Simplify right side
    13,758.07x = 141,834,595.59
  5. Step 5: Solve for x
    x = 141,834,595.59/13,758.07
  6. Step 6: Final answer
    x = 10,309.20

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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.