Home / 15,680.52-21,639.60-8,607.48

Finding the Fourth Proportional to 15,680.52, 21,639.60 and 8,607.48

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Solution

The fourth proportional to 15,680.52, 21,639.60 and 8,607.48 is: 11,878.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,680.52 : 21,639.60 = 8,607.48 : x
  2. Step 2: Convert to fraction form
    15,680.52/21,639.60 = 8,607.48/x
  3. Step 3: Cross multiply
    15,680.52x = 21,639.60 × 8,607.48
  4. Step 4: Simplify right side
    15,680.52x = 186,262,424.21
  5. Step 5: Solve for x
    x = 186,262,424.21/15,680.52
  6. Step 6: Final answer
    x = 11,878.59

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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.