Home / 20,647.08-28,504.79-13,594

Finding the Fourth Proportional to 20,647.08, 28,504.79 and 13,594

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Solution

The fourth proportional to 20,647.08, 28,504.79 and 13,594 is: 18,767.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.08 : 28,504.79 = 13,594 : x
  2. Step 2: Convert to fraction form
    20,647.08/28,504.79 = 13,594/x
  3. Step 3: Cross multiply
    20,647.08x = 28,504.79 × 13,594
  4. Step 4: Simplify right side
    20,647.08x = 387,494,047.29
  5. Step 5: Solve for x
    x = 387,494,047.29/20,647.08
  6. Step 6: Final answer
    x = 18,767.50

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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.