Home / 31,885.80-44,012.40-21,810.36

Finding the Fourth Proportional to 31,885.80, 44,012.40 and 21,810.36

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Solution

The fourth proportional to 31,885.80, 44,012.40 and 21,810.36 is: 30,105.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,885.80 : 44,012.40 = 21,810.36 : x
  2. Step 2: Convert to fraction form
    31,885.80/44,012.40 = 21,810.36/x
  3. Step 3: Cross multiply
    31,885.80x = 44,012.40 × 21,810.36
  4. Step 4: Simplify right side
    31,885.80x = 959,926,288.46
  5. Step 5: Solve for x
    x = 959,926,288.46/31,885.80
  6. Step 6: Final answer
    x = 30,105.13

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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.