Home / 30,250.13-41,742.78-16,820.55

Finding the Fourth Proportional to 30,250.13, 41,742.78 and 16,820.55

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Solution

The fourth proportional to 30,250.13, 41,742.78 and 16,820.55 is: 23,211.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,250.13 : 41,742.78 = 16,820.55 : x
  2. Step 2: Convert to fraction form
    30,250.13/41,742.78 = 16,820.55/x
  3. Step 3: Cross multiply
    30,250.13x = 41,742.78 × 16,820.55
  4. Step 4: Simplify right side
    30,250.13x = 702,136,518.13
  5. Step 5: Solve for x
    x = 702,136,518.13/30,250.13
  6. Step 6: Final answer
    x = 23,211.03

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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.