Home / 15,727.13-21,703.77-8,653.56

Finding the Fourth Proportional to 15,727.13, 21,703.77 and 8,653.56

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Solution

The fourth proportional to 15,727.13, 21,703.77 and 8,653.56 is: 11,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,727.13 : 21,703.77 = 8,653.56 : x
  2. Step 2: Convert to fraction form
    15,727.13/21,703.77 = 8,653.56/x
  3. Step 3: Cross multiply
    15,727.13x = 21,703.77 × 8,653.56
  4. Step 4: Simplify right side
    15,727.13x = 187,814,875.92
  5. Step 5: Solve for x
    x = 187,814,875.92/15,727.13
  6. Step 6: Final answer
    x = 11,942.10

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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.