Home / 19,871.76-27,422.83-10,919.07

Finding the Fourth Proportional to 19,871.76, 27,422.83 and 10,919.07

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Solution

The fourth proportional to 19,871.76, 27,422.83 and 10,919.07 is: 15,068.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.76 : 27,422.83 = 10,919.07 : x
  2. Step 2: Convert to fraction form
    19,871.76/27,422.83 = 10,919.07/x
  3. Step 3: Cross multiply
    19,871.76x = 27,422.83 × 10,919.07
  4. Step 4: Simplify right side
    19,871.76x = 299,431,800.37
  5. Step 5: Solve for x
    x = 299,431,800.37/19,871.76
  6. Step 6: Final answer
    x = 15,068.21

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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.