Home / 15,853.28-21,871.24-10,187.16

Finding the Fourth Proportional to 15,853.28, 21,871.24 and 10,187.16

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Solution

The fourth proportional to 15,853.28, 21,871.24 and 10,187.16 is: 14,054.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,853.28 : 21,871.24 = 10,187.16 : x
  2. Step 2: Convert to fraction form
    15,853.28/21,871.24 = 10,187.16/x
  3. Step 3: Cross multiply
    15,853.28x = 21,871.24 × 10,187.16
  4. Step 4: Simplify right side
    15,853.28x = 222,805,821.28
  5. Step 5: Solve for x
    x = 222,805,821.28/15,853.28
  6. Step 6: Final answer
    x = 14,054.24

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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.