Home / 28,023.60-42,035.40-25,431.60

Finding the Fourth Proportional to 28,023.60, 42,035.40 and 25,431.60

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Solution

The fourth proportional to 28,023.60, 42,035.40 and 25,431.60 is: 38,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,023.60 : 42,035.40 = 25,431.60 : x
  2. Step 2: Convert to fraction form
    28,023.60/42,035.40 = 25,431.60/x
  3. Step 3: Cross multiply
    28,023.60x = 42,035.40 × 25,431.60
  4. Step 4: Simplify right side
    28,023.60x = 1,069,027,478.64
  5. Step 5: Solve for x
    x = 1,069,027,478.64/28,023.60
  6. Step 6: Final answer
    x = 38,147.40

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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.