Home / 28,176.60-42,264.90-18,845.40

Finding the Fourth Proportional to 28,176.60, 42,264.90 and 18,845.40

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Solution

The fourth proportional to 28,176.60, 42,264.90 and 18,845.40 is: 28,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,176.60 : 42,264.90 = 18,845.40 : x
  2. Step 2: Convert to fraction form
    28,176.60/42,264.90 = 18,845.40/x
  3. Step 3: Cross multiply
    28,176.60x = 42,264.90 × 18,845.40
  4. Step 4: Simplify right side
    28,176.60x = 796,498,946.46
  5. Step 5: Solve for x
    x = 796,498,946.46/28,176.60
  6. Step 6: Final answer
    x = 28,268.10

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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.