Home / 18,911.10-28,366.80-5,763.60

Finding the Fourth Proportional to 18,911.10, 28,366.80 and 5,763.60

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Solution

The fourth proportional to 18,911.10, 28,366.80 and 5,763.60 is: 8,645.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.10 : 28,366.80 = 5,763.60 : x
  2. Step 2: Convert to fraction form
    18,911.10/28,366.80 = 5,763.60/x
  3. Step 3: Cross multiply
    18,911.10x = 28,366.80 × 5,763.60
  4. Step 4: Simplify right side
    18,911.10x = 163,494,888.48
  5. Step 5: Solve for x
    x = 163,494,888.48/18,911.10
  6. Step 6: Final answer
    x = 8,645.45

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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.