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Finding the Fourth Proportional to 15,107.83, 20,848.77 and 8,394.08

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Solution

The fourth proportional to 15,107.83, 20,848.77 and 8,394.08 is: 11,583.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.83 : 20,848.77 = 8,394.08 : x
  2. Step 2: Convert to fraction form
    15,107.83/20,848.77 = 8,394.08/x
  3. Step 3: Cross multiply
    15,107.83x = 20,848.77 × 8,394.08
  4. Step 4: Simplify right side
    15,107.83x = 175,006,139.04
  5. Step 5: Solve for x
    x = 175,006,139.04/15,107.83
  6. Step 6: Final answer
    x = 11,583.81

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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.