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Finding the Fourth Proportional to 27,405.80, 41,108.70 and 19,111.40

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Solution

The fourth proportional to 27,405.80, 41,108.70 and 19,111.40 is: 28,667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,405.80 : 41,108.70 = 19,111.40 : x
  2. Step 2: Convert to fraction form
    27,405.80/41,108.70 = 19,111.40/x
  3. Step 3: Cross multiply
    27,405.80x = 41,108.70 × 19,111.40
  4. Step 4: Simplify right side
    27,405.80x = 785,644,809.18
  5. Step 5: Solve for x
    x = 785,644,809.18/27,405.80
  6. Step 6: Final answer
    x = 28,667.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.