Home / 28,281.60-42,422.40-26,143.20

Finding the Fourth Proportional to 28,281.60, 42,422.40 and 26,143.20

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Solution

The fourth proportional to 28,281.60, 42,422.40 and 26,143.20 is: 39,214.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.60 : 42,422.40 = 26,143.20 : x
  2. Step 2: Convert to fraction form
    28,281.60/42,422.40 = 26,143.20/x
  3. Step 3: Cross multiply
    28,281.60x = 42,422.40 × 26,143.20
  4. Step 4: Simplify right side
    28,281.60x = 1,109,057,287.68
  5. Step 5: Solve for x
    x = 1,109,057,287.68/28,281.60
  6. Step 6: Final answer
    x = 39,214.80

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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.