Home / 15,743.61-21,724.02-8,670.42

Finding the Fourth Proportional to 15,743.61, 21,724.02 and 8,670.42

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Solution

The fourth proportional to 15,743.61, 21,724.02 and 8,670.42 is: 11,963.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.61 : 21,724.02 = 8,670.42 : x
  2. Step 2: Convert to fraction form
    15,743.61/21,724.02 = 8,670.42/x
  3. Step 3: Cross multiply
    15,743.61x = 21,724.02 × 8,670.42
  4. Step 4: Simplify right side
    15,743.61x = 188,356,377.49
  5. Step 5: Solve for x
    x = 188,356,377.49/15,743.61
  6. Step 6: Final answer
    x = 11,963.99

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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.