Home / 15,728.58-21,696.12-11,473.92

Finding the Fourth Proportional to 15,728.58, 21,696.12 and 11,473.92

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Solution

The fourth proportional to 15,728.58, 21,696.12 and 11,473.92 is: 15,827.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728.58 : 21,696.12 = 11,473.92 : x
  2. Step 2: Convert to fraction form
    15,728.58/21,696.12 = 11,473.92/x
  3. Step 3: Cross multiply
    15,728.58x = 21,696.12 × 11,473.92
  4. Step 4: Simplify right side
    15,728.58x = 248,939,545.19
  5. Step 5: Solve for x
    x = 248,939,545.19/15,728.58
  6. Step 6: Final answer
    x = 15,827.21

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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.