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Finding the Fourth Proportional to 39,135, 54,006.30 and 22,368.36

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Solution

The fourth proportional to 39,135, 54,006.30 and 22,368.36 is: 30,868.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,135 : 54,006.30 = 22,368.36 : x
  2. Step 2: Convert to fraction form
    39,135/54,006.30 = 22,368.36/x
  3. Step 3: Cross multiply
    39,135x = 54,006.30 × 22,368.36
  4. Step 4: Simplify right side
    39,135x = 1,208,032,360.67
  5. Step 5: Solve for x
    x = 1,208,032,360.67/39,135
  6. Step 6: Final answer
    x = 30,868.34

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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.