Home / 13,976.19-20,931.89-8,417.39

Finding the Fourth Proportional to 13,976.19, 20,931.89 and 8,417.39

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Solution

The fourth proportional to 13,976.19, 20,931.89 and 8,417.39 is: 12,606.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,976.19 : 20,931.89 = 8,417.39 : x
  2. Step 2: Convert to fraction form
    13,976.19/20,931.89 = 8,417.39/x
  3. Step 3: Cross multiply
    13,976.19x = 20,931.89 × 8,417.39
  4. Step 4: Simplify right side
    13,976.19x = 176,191,734.82
  5. Step 5: Solve for x
    x = 176,191,734.82/13,976.19
  6. Step 6: Final answer
    x = 12,606.56

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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.