Home / 30,820.85-42,532.35-17,209.10

Finding the Fourth Proportional to 30,820.85, 42,532.35 and 17,209.10

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Solution

The fourth proportional to 30,820.85, 42,532.35 and 17,209.10 is: 23,748.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,820.85 : 42,532.35 = 17,209.10 : x
  2. Step 2: Convert to fraction form
    30,820.85/42,532.35 = 17,209.10/x
  3. Step 3: Cross multiply
    30,820.85x = 42,532.35 × 17,209.10
  4. Step 4: Simplify right side
    30,820.85x = 731,943,507.41
  5. Step 5: Solve for x
    x = 731,943,507.41/30,820.85
  6. Step 6: Final answer
    x = 23,748.33

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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.