Home / 30,013.31-45,034.01-13,144.19

Finding the Fourth Proportional to 30,013.31, 45,034.01 and 13,144.19

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Solution

The fourth proportional to 30,013.31, 45,034.01 and 13,144.19 is: 19,722.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,013.31 : 45,034.01 = 13,144.19 : x
  2. Step 2: Convert to fraction form
    30,013.31/45,034.01 = 13,144.19/x
  3. Step 3: Cross multiply
    30,013.31x = 45,034.01 × 13,144.19
  4. Step 4: Simplify right side
    30,013.31x = 591,935,293.01
  5. Step 5: Solve for x
    x = 591,935,293.01/30,013.31
  6. Step 6: Final answer
    x = 19,722.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.