Home / 38,667.57-53,361.23-21,900.57

Finding the Fourth Proportional to 38,667.57, 53,361.23 and 21,900.57

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Solution

The fourth proportional to 38,667.57, 53,361.23 and 21,900.57 is: 30,222.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,667.57 : 53,361.23 = 21,900.57 : x
  2. Step 2: Convert to fraction form
    38,667.57/53,361.23 = 21,900.57/x
  3. Step 3: Cross multiply
    38,667.57x = 53,361.23 × 21,900.57
  4. Step 4: Simplify right side
    38,667.57x = 1,168,641,243.40
  5. Step 5: Solve for x
    x = 1,168,641,243.40/38,667.57
  6. Step 6: Final answer
    x = 30,222.77

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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.