Home / 15,723.26-21,695.72-8,916.90

Finding the Fourth Proportional to 15,723.26, 21,695.72 and 8,916.90

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Solution

The fourth proportional to 15,723.26, 21,695.72 and 8,916.90 is: 12,303.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,723.26 : 21,695.72 = 8,916.90 : x
  2. Step 2: Convert to fraction form
    15,723.26/21,695.72 = 8,916.90/x
  3. Step 3: Cross multiply
    15,723.26x = 21,695.72 × 8,916.90
  4. Step 4: Simplify right side
    15,723.26x = 193,458,521.08
  5. Step 5: Solve for x
    x = 193,458,521.08/15,723.26
  6. Step 6: Final answer
    x = 12,303.97

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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.