Home / 15,335.71-21,162.79-8,621.62

Finding the Fourth Proportional to 15,335.71, 21,162.79 and 8,621.62

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Solution

The fourth proportional to 15,335.71, 21,162.79 and 8,621.62 is: 11,897.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,335.71 : 21,162.79 = 8,621.62 : x
  2. Step 2: Convert to fraction form
    15,335.71/21,162.79 = 8,621.62/x
  3. Step 3: Cross multiply
    15,335.71x = 21,162.79 × 8,621.62
  4. Step 4: Simplify right side
    15,335.71x = 182,457,533.52
  5. Step 5: Solve for x
    x = 182,457,533.52/15,335.71
  6. Step 6: Final answer
    x = 11,897.56

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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.