Home / 15,707.58-21,676.77-8,634.66

Finding the Fourth Proportional to 15,707.58, 21,676.77 and 8,634.66

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Solution

The fourth proportional to 15,707.58, 21,676.77 and 8,634.66 is: 11,916.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.58 : 21,676.77 = 8,634.66 : x
  2. Step 2: Convert to fraction form
    15,707.58/21,676.77 = 8,634.66/x
  3. Step 3: Cross multiply
    15,707.58x = 21,676.77 × 8,634.66
  4. Step 4: Simplify right side
    15,707.58x = 187,171,538.85
  5. Step 5: Solve for x
    x = 187,171,538.85/15,707.58
  6. Step 6: Final answer
    x = 11,916.00

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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.