Home / 15,816.93-21,827.19-8,743.20

Finding the Fourth Proportional to 15,816.93, 21,827.19 and 8,743.20

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Solution

The fourth proportional to 15,816.93, 21,827.19 and 8,743.20 is: 12,065.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.93 : 21,827.19 = 8,743.20 : x
  2. Step 2: Convert to fraction form
    15,816.93/21,827.19 = 8,743.20/x
  3. Step 3: Cross multiply
    15,816.93x = 21,827.19 × 8,743.20
  4. Step 4: Simplify right side
    15,816.93x = 190,839,487.61
  5. Step 5: Solve for x
    x = 190,839,487.61/15,816.93
  6. Step 6: Final answer
    x = 12,065.52

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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.