Home / 15,331.58-21,156.27-8,616.68

Finding the Fourth Proportional to 15,331.58, 21,156.27 and 8,616.68

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Solution

The fourth proportional to 15,331.58, 21,156.27 and 8,616.68 is: 11,890.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.58 : 21,156.27 = 8,616.68 : x
  2. Step 2: Convert to fraction form
    15,331.58/21,156.27 = 8,616.68/x
  3. Step 3: Cross multiply
    15,331.58x = 21,156.27 × 8,616.68
  4. Step 4: Simplify right side
    15,331.58x = 182,296,808.58
  5. Step 5: Solve for x
    x = 182,296,808.58/15,331.58
  6. Step 6: Final answer
    x = 11,890.28

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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.