Home / 22,378.40-30,883.80-13,425.68

Finding the Fourth Proportional to 22,378.40, 30,883.80 and 13,425.68

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Solution

The fourth proportional to 22,378.40, 30,883.80 and 13,425.68 is: 18,528.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,378.40 : 30,883.80 = 13,425.68 : x
  2. Step 2: Convert to fraction form
    22,378.40/30,883.80 = 13,425.68/x
  3. Step 3: Cross multiply
    22,378.40x = 30,883.80 × 13,425.68
  4. Step 4: Simplify right side
    22,378.40x = 414,636,015.98
  5. Step 5: Solve for x
    x = 414,636,015.98/22,378.40
  6. Step 6: Final answer
    x = 18,528.40

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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.