Home / 15,708.69-21,677.85-8,635.08

Finding the Fourth Proportional to 15,708.69, 21,677.85 and 8,635.08

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Solution

The fourth proportional to 15,708.69, 21,677.85 and 8,635.08 is: 11,916.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,708.69 : 21,677.85 = 8,635.08 : x
  2. Step 2: Convert to fraction form
    15,708.69/21,677.85 = 8,635.08/x
  3. Step 3: Cross multiply
    15,708.69x = 21,677.85 × 8,635.08
  4. Step 4: Simplify right side
    15,708.69x = 187,189,968.98
  5. Step 5: Solve for x
    x = 187,189,968.98/15,708.69
  6. Step 6: Final answer
    x = 11,916.33

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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.