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Finding the Fourth Proportional to 18,470.99, 27,698.47 and 10,148.51

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Solution

The fourth proportional to 18,470.99, 27,698.47 and 10,148.51 is: 15,218.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,470.99 : 27,698.47 = 10,148.51 : x
  2. Step 2: Convert to fraction form
    18,470.99/27,698.47 = 10,148.51/x
  3. Step 3: Cross multiply
    18,470.99x = 27,698.47 × 10,148.51
  4. Step 4: Simplify right side
    18,470.99x = 281,098,199.78
  5. Step 5: Solve for x
    x = 281,098,199.78/18,470.99
  6. Step 6: Final answer
    x = 15,218.36

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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.