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Finding the Fourth Proportional to 10,859.60, 16,324.20 and 10,089.20

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Solution

The fourth proportional to 10,859.60, 16,324.20 and 10,089.20 is: 15,166.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859.60 : 16,324.20 = 10,089.20 : x
  2. Step 2: Convert to fraction form
    10,859.60/16,324.20 = 10,089.20/x
  3. Step 3: Cross multiply
    10,859.60x = 16,324.20 × 10,089.20
  4. Step 4: Simplify right side
    10,859.60x = 164,698,118.64
  5. Step 5: Solve for x
    x = 164,698,118.64/10,859.60
  6. Step 6: Final answer
    x = 15,166.13

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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.