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Finding the Fourth Proportional to 18,663.16, 27,968.40 and 10,346.88

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Solution

The fourth proportional to 18,663.16, 27,968.40 and 10,346.88 is: 15,505.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.16 : 27,968.40 = 10,346.88 : x
  2. Step 2: Convert to fraction form
    18,663.16/27,968.40 = 10,346.88/x
  3. Step 3: Cross multiply
    18,663.16x = 27,968.40 × 10,346.88
  4. Step 4: Simplify right side
    18,663.16x = 289,385,678.59
  5. Step 5: Solve for x
    x = 289,385,678.59/18,663.16
  6. Step 6: Final answer
    x = 15,505.72

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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.