Home / 15,707.77-21,676.87-8,537.70

Finding the Fourth Proportional to 15,707.77, 21,676.87 and 8,537.70

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Solution

The fourth proportional to 15,707.77, 21,676.87 and 8,537.70 is: 11,782.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.77 : 21,676.87 = 8,537.70 : x
  2. Step 2: Convert to fraction form
    15,707.77/21,676.87 = 8,537.70/x
  3. Step 3: Cross multiply
    15,707.77x = 21,676.87 × 8,537.70
  4. Step 4: Simplify right side
    15,707.77x = 185,070,613.00
  5. Step 5: Solve for x
    x = 185,070,613.00/15,707.77
  6. Step 6: Final answer
    x = 11,782.11

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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.