Home / 30,749.07-42,436.91-18,820.35

Finding the Fourth Proportional to 30,749.07, 42,436.91 and 18,820.35

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Solution

The fourth proportional to 30,749.07, 42,436.91 and 18,820.35 is: 25,974.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,749.07 : 42,436.91 = 18,820.35 : x
  2. Step 2: Convert to fraction form
    30,749.07/42,436.91 = 18,820.35/x
  3. Step 3: Cross multiply
    30,749.07x = 42,436.91 × 18,820.35
  4. Step 4: Simplify right side
    30,749.07x = 798,677,546.17
  5. Step 5: Solve for x
    x = 798,677,546.17/30,749.07
  6. Step 6: Final answer
    x = 25,974.04

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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.