Home / 15,867.32-21,899.22-9,151.64

Finding the Fourth Proportional to 15,867.32, 21,899.22 and 9,151.64

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Solution

The fourth proportional to 15,867.32, 21,899.22 and 9,151.64 is: 12,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,867.32 : 21,899.22 = 9,151.64 : x
  2. Step 2: Convert to fraction form
    15,867.32/21,899.22 = 9,151.64/x
  3. Step 3: Cross multiply
    15,867.32x = 21,899.22 × 9,151.64
  4. Step 4: Simplify right side
    15,867.32x = 200,413,668.22
  5. Step 5: Solve for x
    x = 200,413,668.22/15,867.32
  6. Step 6: Final answer
    x = 12,630.60

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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.