Home / 13,872.60-19,131.36-9,402.84

Finding the Fourth Proportional to 13,872.60, 19,131.36 and 9,402.84

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Solution

The fourth proportional to 13,872.60, 19,131.36 and 9,402.84 is: 12,967.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.60 : 19,131.36 = 9,402.84 : x
  2. Step 2: Convert to fraction form
    13,872.60/19,131.36 = 9,402.84/x
  3. Step 3: Cross multiply
    13,872.60x = 19,131.36 × 9,402.84
  4. Step 4: Simplify right side
    13,872.60x = 179,889,117.06
  5. Step 5: Solve for x
    x = 179,889,117.06/13,872.60
  6. Step 6: Final answer
    x = 12,967.22

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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.