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Finding the Fourth Proportional to 13,055.65, 18,016.74 and 7,087.27

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Solution

The fourth proportional to 13,055.65, 18,016.74 and 7,087.27 is: 9,780.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.65 : 18,016.74 = 7,087.27 : x
  2. Step 2: Convert to fraction form
    13,055.65/18,016.74 = 7,087.27/x
  3. Step 3: Cross multiply
    13,055.65x = 18,016.74 × 7,087.27
  4. Step 4: Simplify right side
    13,055.65x = 127,689,500.90
  5. Step 5: Solve for x
    x = 127,689,500.90/13,055.65
  6. Step 6: Final answer
    x = 9,780.40

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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.