Home / 28,100.24-38,777.18-15,353.86

Finding the Fourth Proportional to 28,100.24, 38,777.18 and 15,353.86

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Solution

The fourth proportional to 28,100.24, 38,777.18 and 15,353.86 is: 21,187.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.24 : 38,777.18 = 15,353.86 : x
  2. Step 2: Convert to fraction form
    28,100.24/38,777.18 = 15,353.86/x
  3. Step 3: Cross multiply
    28,100.24x = 38,777.18 × 15,353.86
  4. Step 4: Simplify right side
    28,100.24x = 595,379,219.20
  5. Step 5: Solve for x
    x = 595,379,219.20/28,100.24
  6. Step 6: Final answer
    x = 21,187.70

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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.