Home / 28,218.60-42,206.40-25,278.30

Finding the Fourth Proportional to 28,218.60, 42,206.40 and 25,278.30

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Solution

The fourth proportional to 28,218.60, 42,206.40 and 25,278.30 is: 37,808.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.60 : 42,206.40 = 25,278.30 : x
  2. Step 2: Convert to fraction form
    28,218.60/42,206.40 = 25,278.30/x
  3. Step 3: Cross multiply
    28,218.60x = 42,206.40 × 25,278.30
  4. Step 4: Simplify right side
    28,218.60x = 1,066,906,041.12
  5. Step 5: Solve for x
    x = 1,066,906,041.12/28,218.60
  6. Step 6: Final answer
    x = 37,808.61

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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.