Home / 15,869.48-21,899.28-8,796

Finding the Fourth Proportional to 15,869.48, 21,899.28 and 8,796

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Solution

The fourth proportional to 15,869.48, 21,899.28 and 8,796 is: 12,138.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.48 : 21,899.28 = 8,796 : x
  2. Step 2: Convert to fraction form
    15,869.48/21,899.28 = 8,796/x
  3. Step 3: Cross multiply
    15,869.48x = 21,899.28 × 8,796
  4. Step 4: Simplify right side
    15,869.48x = 192,626,066.88
  5. Step 5: Solve for x
    x = 192,626,066.88/15,869.48
  6. Step 6: Final answer
    x = 12,138.15

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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.