Home / 15,335.50-21,162.99-8,621.05

Finding the Fourth Proportional to 15,335.50, 21,162.99 and 8,621.05

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Solution

The fourth proportional to 15,335.50, 21,162.99 and 8,621.05 is: 11,897.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,335.50 : 21,162.99 = 8,621.05 : x
  2. Step 2: Convert to fraction form
    15,335.50/21,162.99 = 8,621.05/x
  3. Step 3: Cross multiply
    15,335.50x = 21,162.99 × 8,621.05
  4. Step 4: Simplify right side
    15,335.50x = 182,447,194.94
  5. Step 5: Solve for x
    x = 182,447,194.94/15,335.50
  6. Step 6: Final answer
    x = 11,897.05

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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.