Home / 28,243.20-42,364.80-15,801.60

Finding the Fourth Proportional to 28,243.20, 42,364.80 and 15,801.60

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Solution

The fourth proportional to 28,243.20, 42,364.80 and 15,801.60 is: 23,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.20 : 42,364.80 = 15,801.60 : x
  2. Step 2: Convert to fraction form
    28,243.20/42,364.80 = 15,801.60/x
  3. Step 3: Cross multiply
    28,243.20x = 42,364.80 × 15,801.60
  4. Step 4: Simplify right side
    28,243.20x = 669,431,623.68
  5. Step 5: Solve for x
    x = 669,431,623.68/28,243.20
  6. Step 6: Final answer
    x = 23,702.40

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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.