Home / 13,758.19-18,986.23-7,470.56

Finding the Fourth Proportional to 13,758.19, 18,986.23 and 7,470.56

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Solution

The fourth proportional to 13,758.19, 18,986.23 and 7,470.56 is: 10,309.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.19 : 18,986.23 = 7,470.56 : x
  2. Step 2: Convert to fraction form
    13,758.19/18,986.23 = 7,470.56/x
  3. Step 3: Cross multiply
    13,758.19x = 18,986.23 × 7,470.56
  4. Step 4: Simplify right side
    13,758.19x = 141,837,827.19
  5. Step 5: Solve for x
    x = 141,837,827.19/13,758.19
  6. Step 6: Final answer
    x = 10,309.34

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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.