Home / 18,387.36-25,374.84-10,428.96

Finding the Fourth Proportional to 18,387.36, 25,374.84 and 10,428.96

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Solution

The fourth proportional to 18,387.36, 25,374.84 and 10,428.96 is: 14,392.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.36 : 25,374.84 = 10,428.96 : x
  2. Step 2: Convert to fraction form
    18,387.36/25,374.84 = 10,428.96/x
  3. Step 3: Cross multiply
    18,387.36x = 25,374.84 × 10,428.96
  4. Step 4: Simplify right side
    18,387.36x = 264,633,191.37
  5. Step 5: Solve for x
    x = 264,633,191.37/18,387.36
  6. Step 6: Final answer
    x = 14,392.13

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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.