Home / 30,923.42-42,684.57-21,996.81

Finding the Fourth Proportional to 30,923.42, 42,684.57 and 21,996.81

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Solution

The fourth proportional to 30,923.42, 42,684.57 and 21,996.81 is: 30,362.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,923.42 : 42,684.57 = 21,996.81 : x
  2. Step 2: Convert to fraction form
    30,923.42/42,684.57 = 21,996.81/x
  3. Step 3: Cross multiply
    30,923.42x = 42,684.57 × 21,996.81
  4. Step 4: Simplify right side
    30,923.42x = 938,924,376.22
  5. Step 5: Solve for x
    x = 938,924,376.22/30,923.42
  6. Step 6: Final answer
    x = 30,362.89

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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.