Home / 31,116.60-42,941.48-16,969.40

Finding the Fourth Proportional to 31,116.60, 42,941.48 and 16,969.40

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Solution

The fourth proportional to 31,116.60, 42,941.48 and 16,969.40 is: 23,418.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,116.60 : 42,941.48 = 16,969.40 : x
  2. Step 2: Convert to fraction form
    31,116.60/42,941.48 = 16,969.40/x
  3. Step 3: Cross multiply
    31,116.60x = 42,941.48 × 16,969.40
  4. Step 4: Simplify right side
    31,116.60x = 728,691,150.71
  5. Step 5: Solve for x
    x = 728,691,150.71/31,116.60
  6. Step 6: Final answer
    x = 23,418.08

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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.