Home / 15,679.30-21,637.51-8,605.73

Finding the Fourth Proportional to 15,679.30, 21,637.51 and 8,605.73

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Solution

The fourth proportional to 15,679.30, 21,637.51 and 8,605.73 is: 11,875.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679.30 : 21,637.51 = 8,605.73 : x
  2. Step 2: Convert to fraction form
    15,679.30/21,637.51 = 8,605.73/x
  3. Step 3: Cross multiply
    15,679.30x = 21,637.51 × 8,605.73
  4. Step 4: Simplify right side
    15,679.30x = 186,206,460.74
  5. Step 5: Solve for x
    x = 186,206,460.74/15,679.30
  6. Step 6: Final answer
    x = 11,875.95

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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.