Home / 31,368.48-43,282.56-21,304.96

Finding the Fourth Proportional to 31,368.48, 43,282.56 and 21,304.96

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Solution

The fourth proportional to 31,368.48, 43,282.56 and 21,304.96 is: 29,396.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,368.48 : 43,282.56 = 21,304.96 : x
  2. Step 2: Convert to fraction form
    31,368.48/43,282.56 = 21,304.96/x
  3. Step 3: Cross multiply
    31,368.48x = 43,282.56 × 21,304.96
  4. Step 4: Simplify right side
    31,368.48x = 922,133,209.50
  5. Step 5: Solve for x
    x = 922,133,209.50/31,368.48
  6. Step 6: Final answer
    x = 29,396.81

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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.