Home / 30,918.72-42,707.88-22,868.75

Finding the Fourth Proportional to 30,918.72, 42,707.88 and 22,868.75

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Solution

The fourth proportional to 30,918.72, 42,707.88 and 22,868.75 is: 31,588.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.72 : 42,707.88 = 22,868.75 : x
  2. Step 2: Convert to fraction form
    30,918.72/42,707.88 = 22,868.75/x
  3. Step 3: Cross multiply
    30,918.72x = 42,707.88 × 22,868.75
  4. Step 4: Simplify right side
    30,918.72x = 976,675,617.21
  5. Step 5: Solve for x
    x = 976,675,617.21/30,918.72
  6. Step 6: Final answer
    x = 31,588.49

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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.