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Finding the Fourth Proportional to 18,100.90, 24,980.24 and 10,145.68

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Solution

The fourth proportional to 18,100.90, 24,980.24 and 10,145.68 is: 14,001.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,100.90 : 24,980.24 = 10,145.68 : x
  2. Step 2: Convert to fraction form
    18,100.90/24,980.24 = 10,145.68/x
  3. Step 3: Cross multiply
    18,100.90x = 24,980.24 × 10,145.68
  4. Step 4: Simplify right side
    18,100.90x = 253,441,521.36
  5. Step 5: Solve for x
    x = 253,441,521.36/18,100.90
  6. Step 6: Final answer
    x = 14,001.60

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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.