Home / 19,881.80-27,436.94-11,384.05

Finding the Fourth Proportional to 19,881.80, 27,436.94 and 11,384.05

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Solution

The fourth proportional to 19,881.80, 27,436.94 and 11,384.05 is: 15,710.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.80 : 27,436.94 = 11,384.05 : x
  2. Step 2: Convert to fraction form
    19,881.80/27,436.94 = 11,384.05/x
  3. Step 3: Cross multiply
    19,881.80x = 27,436.94 × 11,384.05
  4. Step 4: Simplify right side
    19,881.80x = 312,343,439.89
  5. Step 5: Solve for x
    x = 312,343,439.89/19,881.80
  6. Step 6: Final answer
    x = 15,710.02

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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.