Home / 31,022.11-42,835.40-21,574.27

Finding the Fourth Proportional to 31,022.11, 42,835.40 and 21,574.27

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Solution

The fourth proportional to 31,022.11, 42,835.40 and 21,574.27 is: 29,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,022.11 : 42,835.40 = 21,574.27 : x
  2. Step 2: Convert to fraction form
    31,022.11/42,835.40 = 21,574.27/x
  3. Step 3: Cross multiply
    31,022.11x = 42,835.40 × 21,574.27
  4. Step 4: Simplify right side
    31,022.11x = 924,142,485.16
  5. Step 5: Solve for x
    x = 924,142,485.16/31,022.11
  6. Step 6: Final answer
    x = 29,789.80

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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.