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Finding the Fourth Proportional to 18,330.16, 27,501.80 and 7,802.80

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Solution

The fourth proportional to 18,330.16, 27,501.80 and 7,802.80 is: 11,706.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,330.16 : 27,501.80 = 7,802.80 : x
  2. Step 2: Convert to fraction form
    18,330.16/27,501.80 = 7,802.80/x
  3. Step 3: Cross multiply
    18,330.16x = 27,501.80 × 7,802.80
  4. Step 4: Simplify right side
    18,330.16x = 214,591,045.04
  5. Step 5: Solve for x
    x = 214,591,045.04/18,330.16
  6. Step 6: Final answer
    x = 11,706.99

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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.