Home / 15,651.39-21,599.34-8,578.08

Finding the Fourth Proportional to 15,651.39, 21,599.34 and 8,578.08

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Solution

The fourth proportional to 15,651.39, 21,599.34 and 8,578.08 is: 11,837.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,651.39 : 21,599.34 = 8,578.08 : x
  2. Step 2: Convert to fraction form
    15,651.39/21,599.34 = 8,578.08/x
  3. Step 3: Cross multiply
    15,651.39x = 21,599.34 × 8,578.08
  4. Step 4: Simplify right side
    15,651.39x = 185,280,866.47
  5. Step 5: Solve for x
    x = 185,280,866.47/15,651.39
  6. Step 6: Final answer
    x = 11,837.98

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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.