Home / 18,928.58-28,389.20-5,782.28

Finding the Fourth Proportional to 18,928.58, 28,389.20 and 5,782.28

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Solution

The fourth proportional to 18,928.58, 28,389.20 and 5,782.28 is: 8,672.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.58 : 28,389.20 = 5,782.28 : x
  2. Step 2: Convert to fraction form
    18,928.58/28,389.20 = 5,782.28/x
  3. Step 3: Cross multiply
    18,928.58x = 28,389.20 × 5,782.28
  4. Step 4: Simplify right side
    18,928.58x = 164,154,132.52
  5. Step 5: Solve for x
    x = 164,154,132.52/18,928.58
  6. Step 6: Final answer
    x = 8,672.29

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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.