Home / 31,116.13-42,940.26-16,969.07

Finding the Fourth Proportional to 31,116.13, 42,940.26 and 16,969.07

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Solution

The fourth proportional to 31,116.13, 42,940.26 and 16,969.07 is: 23,417.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,116.13 : 42,940.26 = 16,969.07 : x
  2. Step 2: Convert to fraction form
    31,116.13/42,940.26 = 16,969.07/x
  3. Step 3: Cross multiply
    31,116.13x = 42,940.26 × 16,969.07
  4. Step 4: Simplify right side
    31,116.13x = 728,656,277.76
  5. Step 5: Solve for x
    x = 728,656,277.76/31,116.13
  6. Step 6: Final answer
    x = 23,417.32

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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.