Home / 28,246.80-42,370.20-25,719.60

Finding the Fourth Proportional to 28,246.80, 42,370.20 and 25,719.60

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Solution

The fourth proportional to 28,246.80, 42,370.20 and 25,719.60 is: 38,579.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,246.80 : 42,370.20 = 25,719.60 : x
  2. Step 2: Convert to fraction form
    28,246.80/42,370.20 = 25,719.60/x
  3. Step 3: Cross multiply
    28,246.80x = 42,370.20 × 25,719.60
  4. Step 4: Simplify right side
    28,246.80x = 1,089,744,595.92
  5. Step 5: Solve for x
    x = 1,089,744,595.92/28,246.80
  6. Step 6: Final answer
    x = 38,579.40

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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.