Home / 31,078.41-42,888.13-16,931.22

Finding the Fourth Proportional to 31,078.41, 42,888.13 and 16,931.22

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Solution

The fourth proportional to 31,078.41, 42,888.13 and 16,931.22 is: 23,365.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,078.41 : 42,888.13 = 16,931.22 : x
  2. Step 2: Convert to fraction form
    31,078.41/42,888.13 = 16,931.22/x
  3. Step 3: Cross multiply
    31,078.41x = 42,888.13 × 16,931.22
  4. Step 4: Simplify right side
    31,078.41x = 726,148,322.09
  5. Step 5: Solve for x
    x = 726,148,322.09/31,078.41
  6. Step 6: Final answer
    x = 23,365.04

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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.