Home / 15,679.65-21,637.83-8,605.92

Finding the Fourth Proportional to 15,679.65, 21,637.83 and 8,605.92

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Solution

The fourth proportional to 15,679.65, 21,637.83 and 8,605.92 is: 11,876.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679.65 : 21,637.83 = 8,605.92 : x
  2. Step 2: Convert to fraction form
    15,679.65/21,637.83 = 8,605.92/x
  3. Step 3: Cross multiply
    15,679.65x = 21,637.83 × 8,605.92
  4. Step 4: Simplify right side
    15,679.65x = 186,213,433.95
  5. Step 5: Solve for x
    x = 186,213,433.95/15,679.65
  6. Step 6: Final answer
    x = 11,876.12

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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.