Home / 20,002.61-27,605.75-11,505.11

Finding the Fourth Proportional to 20,002.61, 27,605.75 and 11,505.11

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Solution

The fourth proportional to 20,002.61, 27,605.75 and 11,505.11 is: 15,878.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,002.61 : 27,605.75 = 11,505.11 : x
  2. Step 2: Convert to fraction form
    20,002.61/27,605.75 = 11,505.11/x
  3. Step 3: Cross multiply
    20,002.61x = 27,605.75 × 11,505.11
  4. Step 4: Simplify right side
    20,002.61x = 317,606,994.83
  5. Step 5: Solve for x
    x = 317,606,994.83/20,002.61
  6. Step 6: Final answer
    x = 15,878.28

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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.