Home / 31,038.12-42,832.71-16,891.02

Finding the Fourth Proportional to 31,038.12, 42,832.71 and 16,891.02

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Solution

The fourth proportional to 31,038.12, 42,832.71 and 16,891.02 is: 23,309.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,038.12 : 42,832.71 = 16,891.02 : x
  2. Step 2: Convert to fraction form
    31,038.12/42,832.71 = 16,891.02/x
  3. Step 3: Cross multiply
    31,038.12x = 42,832.71 × 16,891.02
  4. Step 4: Simplify right side
    31,038.12x = 723,488,161.26
  5. Step 5: Solve for x
    x = 723,488,161.26/31,038.12
  6. Step 6: Final answer
    x = 23,309.66

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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.