Home / 13,758.27-18,986.45-7,470.51

Finding the Fourth Proportional to 13,758.27, 18,986.45 and 7,470.51

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Solution

The fourth proportional to 13,758.27, 18,986.45 and 7,470.51 is: 10,309.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.27 : 18,986.45 = 7,470.51 : x
  2. Step 2: Convert to fraction form
    13,758.27/18,986.45 = 7,470.51/x
  3. Step 3: Cross multiply
    13,758.27x = 18,986.45 × 7,470.51
  4. Step 4: Simplify right side
    13,758.27x = 141,838,427.24
  5. Step 5: Solve for x
    x = 141,838,427.24/13,758.27
  6. Step 6: Final answer
    x = 10,309.32

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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.