Home / 28,532.39-42,840.12-20,256.35

Finding the Fourth Proportional to 28,532.39, 42,840.12 and 20,256.35

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Solution

The fourth proportional to 28,532.39, 42,840.12 and 20,256.35 is: 30,414.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,532.39 : 42,840.12 = 20,256.35 : x
  2. Step 2: Convert to fraction form
    28,532.39/42,840.12 = 20,256.35/x
  3. Step 3: Cross multiply
    28,532.39x = 42,840.12 × 20,256.35
  4. Step 4: Simplify right side
    28,532.39x = 867,784,464.76
  5. Step 5: Solve for x
    x = 867,784,464.76/28,532.39
  6. Step 6: Final answer
    x = 30,414.01

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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.