Home / 30,820.08-42,531.30-17,208.34

Finding the Fourth Proportional to 30,820.08, 42,531.30 and 17,208.34

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Solution

The fourth proportional to 30,820.08, 42,531.30 and 17,208.34 is: 23,747.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,820.08 : 42,531.30 = 17,208.34 : x
  2. Step 2: Convert to fraction form
    30,820.08/42,531.30 = 17,208.34/x
  3. Step 3: Cross multiply
    30,820.08x = 42,531.30 × 17,208.34
  4. Step 4: Simplify right side
    30,820.08x = 731,892,826.12
  5. Step 5: Solve for x
    x = 731,892,826.12/30,820.08
  6. Step 6: Final answer
    x = 23,747.27

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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.