Home / 15,723.36-21,672.24-10,685.28

Finding the Fourth Proportional to 15,723.36, 21,672.24 and 10,685.28

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Solution

The fourth proportional to 15,723.36, 21,672.24 and 10,685.28 is: 14,728.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,723.36 : 21,672.24 = 10,685.28 : x
  2. Step 2: Convert to fraction form
    15,723.36/21,672.24 = 10,685.28/x
  3. Step 3: Cross multiply
    15,723.36x = 21,672.24 × 10,685.28
  4. Step 4: Simplify right side
    15,723.36x = 231,573,952.63
  5. Step 5: Solve for x
    x = 231,573,952.63/15,723.36
  6. Step 6: Final answer
    x = 14,728.02

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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.