Home / 15,689.52-21,651.45-8,519.58

Finding the Fourth Proportional to 15,689.52, 21,651.45 and 8,519.58

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Solution

The fourth proportional to 15,689.52, 21,651.45 and 8,519.58 is: 11,756.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,689.52 : 21,651.45 = 8,519.58 : x
  2. Step 2: Convert to fraction form
    15,689.52/21,651.45 = 8,519.58/x
  3. Step 3: Cross multiply
    15,689.52x = 21,651.45 × 8,519.58
  4. Step 4: Simplify right side
    15,689.52x = 184,461,260.39
  5. Step 5: Solve for x
    x = 184,461,260.39/15,689.52
  6. Step 6: Final answer
    x = 11,756.97

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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.