Home / 31,040.46-42,886.02-21,650.94

Finding the Fourth Proportional to 31,040.46, 42,886.02 and 21,650.94

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Solution

The fourth proportional to 31,040.46, 42,886.02 and 21,650.94 is: 29,913.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,040.46 : 42,886.02 = 21,650.94 : x
  2. Step 2: Convert to fraction form
    31,040.46/42,886.02 = 21,650.94/x
  3. Step 3: Cross multiply
    31,040.46x = 42,886.02 × 21,650.94
  4. Step 4: Simplify right side
    31,040.46x = 928,522,645.86
  5. Step 5: Solve for x
    x = 928,522,645.86/31,040.46
  6. Step 6: Final answer
    x = 29,913.30

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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.