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Finding the Fourth Proportional to 18,152.75, 27,210.90 and 11,117.90

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Solution

The fourth proportional to 18,152.75, 27,210.90 and 11,117.90 is: 16,665.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,152.75 : 27,210.90 = 11,117.90 : x
  2. Step 2: Convert to fraction form
    18,152.75/27,210.90 = 11,117.90/x
  3. Step 3: Cross multiply
    18,152.75x = 27,210.90 × 11,117.90
  4. Step 4: Simplify right side
    18,152.75x = 302,528,065.11
  5. Step 5: Solve for x
    x = 302,528,065.11/18,152.75
  6. Step 6: Final answer
    x = 16,665.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.