Home / 19,721.77-27,219.03-12,069.43

Finding the Fourth Proportional to 19,721.77, 27,219.03 and 12,069.43

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Solution

The fourth proportional to 19,721.77, 27,219.03 and 12,069.43 is: 16,657.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.77 : 27,219.03 = 12,069.43 : x
  2. Step 2: Convert to fraction form
    19,721.77/27,219.03 = 12,069.43/x
  3. Step 3: Cross multiply
    19,721.77x = 27,219.03 × 12,069.43
  4. Step 4: Simplify right side
    19,721.77x = 328,518,177.25
  5. Step 5: Solve for x
    x = 328,518,177.25/19,721.77
  6. Step 6: Final answer
    x = 16,657.64

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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.