Home / 15,707.98-21,677.16-8,634.61

Finding the Fourth Proportional to 15,707.98, 21,677.16 and 8,634.61

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Solution

The fourth proportional to 15,707.98, 21,677.16 and 8,634.61 is: 11,915.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.98 : 21,677.16 = 8,634.61 : x
  2. Step 2: Convert to fraction form
    15,707.98/21,677.16 = 8,634.61/x
  3. Step 3: Cross multiply
    15,707.98x = 21,677.16 × 8,634.61
  4. Step 4: Simplify right side
    15,707.98x = 187,173,822.51
  5. Step 5: Solve for x
    x = 187,173,822.51/15,707.98
  6. Step 6: Final answer
    x = 11,915.84

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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.