Home / 15,707.30-21,679.84-8,996.82

Finding the Fourth Proportional to 15,707.30, 21,679.84 and 8,996.82

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Solution

The fourth proportional to 15,707.30, 21,679.84 and 8,996.82 is: 12,417.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.30 : 21,679.84 = 8,996.82 : x
  2. Step 2: Convert to fraction form
    15,707.30/21,679.84 = 8,996.82/x
  3. Step 3: Cross multiply
    15,707.30x = 21,679.84 × 8,996.82
  4. Step 4: Simplify right side
    15,707.30x = 195,049,618.11
  5. Step 5: Solve for x
    x = 195,049,618.11/15,707.30
  6. Step 6: Final answer
    x = 12,417.77

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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.