Home / 30,036.10-41,434.10-18,703.78

Finding the Fourth Proportional to 30,036.10, 41,434.10 and 18,703.78

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Solution

The fourth proportional to 30,036.10, 41,434.10 and 18,703.78 is: 25,801.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,036.10 : 41,434.10 = 18,703.78 : x
  2. Step 2: Convert to fraction form
    30,036.10/41,434.10 = 18,703.78/x
  3. Step 3: Cross multiply
    30,036.10x = 41,434.10 × 18,703.78
  4. Step 4: Simplify right side
    30,036.10x = 774,974,290.90
  5. Step 5: Solve for x
    x = 774,974,290.90/30,036.10
  6. Step 6: Final answer
    x = 25,801.43

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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.