Home / 15,869.61-21,897.72-8,796

Finding the Fourth Proportional to 15,869.61, 21,897.72 and 8,796

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Solution

The fourth proportional to 15,869.61, 21,897.72 and 8,796 is: 12,137.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.61 : 21,897.72 = 8,796 : x
  2. Step 2: Convert to fraction form
    15,869.61/21,897.72 = 8,796/x
  3. Step 3: Cross multiply
    15,869.61x = 21,897.72 × 8,796
  4. Step 4: Simplify right side
    15,869.61x = 192,612,345.12
  5. Step 5: Solve for x
    x = 192,612,345.12/15,869.61
  6. Step 6: Final answer
    x = 12,137.18

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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.