Home / 13,417.17-20,118.92-7,881.33

Finding the Fourth Proportional to 13,417.17, 20,118.92 and 7,881.33

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Solution

The fourth proportional to 13,417.17, 20,118.92 and 7,881.33 is: 11,817.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.17 : 20,118.92 = 7,881.33 : x
  2. Step 2: Convert to fraction form
    13,417.17/20,118.92 = 7,881.33/x
  3. Step 3: Cross multiply
    13,417.17x = 20,118.92 × 7,881.33
  4. Step 4: Simplify right side
    13,417.17x = 158,563,847.76
  5. Step 5: Solve for x
    x = 158,563,847.76/13,417.17
  6. Step 6: Final answer
    x = 11,817.98

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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.