Home / 31,112.64-42,935.67-16,965.18

Finding the Fourth Proportional to 31,112.64, 42,935.67 and 16,965.18

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Solution

The fourth proportional to 31,112.64, 42,935.67 and 16,965.18 is: 23,412.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,112.64 : 42,935.67 = 16,965.18 : x
  2. Step 2: Convert to fraction form
    31,112.64/42,935.67 = 16,965.18/x
  3. Step 3: Cross multiply
    31,112.64x = 42,935.67 × 16,965.18
  4. Step 4: Simplify right side
    31,112.64x = 728,411,369.97
  5. Step 5: Solve for x
    x = 728,411,369.97/31,112.64
  6. Step 6: Final answer
    x = 23,412.07

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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.