Home / 19,822.20-27,368.98-12,760.92

Finding the Fourth Proportional to 19,822.20, 27,368.98 and 12,760.92

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Solution

The fourth proportional to 19,822.20, 27,368.98 and 12,760.92 is: 17,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,822.20 : 27,368.98 = 12,760.92 : x
  2. Step 2: Convert to fraction form
    19,822.20/27,368.98 = 12,760.92/x
  3. Step 3: Cross multiply
    19,822.20x = 27,368.98 × 12,760.92
  4. Step 4: Simplify right side
    19,822.20x = 349,253,364.26
  5. Step 5: Solve for x
    x = 349,253,364.26/19,822.20
  6. Step 6: Final answer
    x = 17,619.30

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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.