Home / 25,404.80-38,150.40-18,838.40

Finding the Fourth Proportional to 25,404.80, 38,150.40 and 18,838.40

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Solution

The fourth proportional to 25,404.80, 38,150.40 and 18,838.40 is: 28,289.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,404.80 : 38,150.40 = 18,838.40 : x
  2. Step 2: Convert to fraction form
    25,404.80/38,150.40 = 18,838.40/x
  3. Step 3: Cross multiply
    25,404.80x = 38,150.40 × 18,838.40
  4. Step 4: Simplify right side
    25,404.80x = 718,692,495.36
  5. Step 5: Solve for x
    x = 718,692,495.36/25,404.80
  6. Step 6: Final answer
    x = 28,289.63

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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.