Home / 19,871.27-27,422.85-10,919.00

Finding the Fourth Proportional to 19,871.27, 27,422.85 and 10,919.00

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Solution

The fourth proportional to 19,871.27, 27,422.85 and 10,919.00 is: 15,068.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.27 : 27,422.85 = 10,919.00 : x
  2. Step 2: Convert to fraction form
    19,871.27/27,422.85 = 10,919.00/x
  3. Step 3: Cross multiply
    19,871.27x = 27,422.85 × 10,919.00
  4. Step 4: Simplify right side
    19,871.27x = 299,429,907.44
  5. Step 5: Solve for x
    x = 299,429,907.44/19,871.27
  6. Step 6: Final answer
    x = 15,068.49

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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.