Home / 31,025.76-42,815.28-16,878.60

Finding the Fourth Proportional to 31,025.76, 42,815.28 and 16,878.60

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Solution

The fourth proportional to 31,025.76, 42,815.28 and 16,878.60 is: 23,292.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,025.76 : 42,815.28 = 16,878.60 : x
  2. Step 2: Convert to fraction form
    31,025.76/42,815.28 = 16,878.60/x
  3. Step 3: Cross multiply
    31,025.76x = 42,815.28 × 16,878.60
  4. Step 4: Simplify right side
    31,025.76x = 722,661,985.01
  5. Step 5: Solve for x
    x = 722,661,985.01/31,025.76
  6. Step 6: Final answer
    x = 23,292.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.