Home / 15,268.50-21,071.34-8,979.66

Finding the Fourth Proportional to 15,268.50, 21,071.34 and 8,979.66

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Solution

The fourth proportional to 15,268.50, 21,071.34 and 8,979.66 is: 12,392.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,268.50 : 21,071.34 = 8,979.66 : x
  2. Step 2: Convert to fraction form
    15,268.50/21,071.34 = 8,979.66/x
  3. Step 3: Cross multiply
    15,268.50x = 21,071.34 × 8,979.66
  4. Step 4: Simplify right side
    15,268.50x = 189,213,468.94
  5. Step 5: Solve for x
    x = 189,213,468.94/15,268.50
  6. Step 6: Final answer
    x = 12,392.41

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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.