Home / 28,130.13-38,820.11-16,195.77

Finding the Fourth Proportional to 28,130.13, 38,820.11 and 16,195.77

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Solution

The fourth proportional to 28,130.13, 38,820.11 and 16,195.77 is: 22,350.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.13 : 38,820.11 = 16,195.77 : x
  2. Step 2: Convert to fraction form
    28,130.13/38,820.11 = 16,195.77/x
  3. Step 3: Cross multiply
    28,130.13x = 38,820.11 × 16,195.77
  4. Step 4: Simplify right side
    28,130.13x = 628,721,491.96
  5. Step 5: Solve for x
    x = 628,721,491.96/28,130.13
  6. Step 6: Final answer
    x = 22,350.47

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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.