Home / 13,632.04-18,758.28-11,386.72

Finding the Fourth Proportional to 13,632.04, 18,758.28 and 11,386.72

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Solution

The fourth proportional to 13,632.04, 18,758.28 and 11,386.72 is: 15,668.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.04 : 18,758.28 = 11,386.72 : x
  2. Step 2: Convert to fraction form
    13,632.04/18,758.28 = 11,386.72/x
  3. Step 3: Cross multiply
    13,632.04x = 18,758.28 × 11,386.72
  4. Step 4: Simplify right side
    13,632.04x = 213,595,282.04
  5. Step 5: Solve for x
    x = 213,595,282.04/13,632.04
  6. Step 6: Final answer
    x = 15,668.62

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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.