Home / 13,055.52-18,000.72-11,370.72

Finding the Fourth Proportional to 13,055.52, 18,000.72 and 11,370.72

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Solution

The fourth proportional to 13,055.52, 18,000.72 and 11,370.72 is: 15,677.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.52 : 18,000.72 = 11,370.72 : x
  2. Step 2: Convert to fraction form
    13,055.52/18,000.72 = 11,370.72/x
  3. Step 3: Cross multiply
    13,055.52x = 18,000.72 × 11,370.72
  4. Step 4: Simplify right side
    13,055.52x = 204,681,146.92
  5. Step 5: Solve for x
    x = 204,681,146.92/13,055.52
  6. Step 6: Final answer
    x = 15,677.75

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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.