Home / 31,077.78-42,886.95-16,930.32

Finding the Fourth Proportional to 31,077.78, 42,886.95 and 16,930.32

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Solution

The fourth proportional to 31,077.78, 42,886.95 and 16,930.32 is: 23,363.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,077.78 : 42,886.95 = 16,930.32 : x
  2. Step 2: Convert to fraction form
    31,077.78/42,886.95 = 16,930.32/x
  3. Step 3: Cross multiply
    31,077.78x = 42,886.95 × 16,930.32
  4. Step 4: Simplify right side
    31,077.78x = 726,089,787.32
  5. Step 5: Solve for x
    x = 726,089,787.32/31,077.78
  6. Step 6: Final answer
    x = 23,363.63

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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.