Home / 18,378.29-25,350.10-10,818.26

Finding the Fourth Proportional to 18,378.29, 25,350.10 and 10,818.26

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Solution

The fourth proportional to 18,378.29, 25,350.10 and 10,818.26 is: 14,922.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.29 : 25,350.10 = 10,818.26 : x
  2. Step 2: Convert to fraction form
    18,378.29/25,350.10 = 10,818.26/x
  3. Step 3: Cross multiply
    18,378.29x = 25,350.10 × 10,818.26
  4. Step 4: Simplify right side
    18,378.29x = 274,243,914.09
  5. Step 5: Solve for x
    x = 274,243,914.09/18,378.29
  6. Step 6: Final answer
    x = 14,922.17

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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.