Home / 28,462.48-39,274.60-15,887.76

Finding the Fourth Proportional to 28,462.48, 39,274.60 and 15,887.76

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Solution

The fourth proportional to 28,462.48, 39,274.60 and 15,887.76 is: 21,923.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,462.48 : 39,274.60 = 15,887.76 : x
  2. Step 2: Convert to fraction form
    28,462.48/39,274.60 = 15,887.76/x
  3. Step 3: Cross multiply
    28,462.48x = 39,274.60 × 15,887.76
  4. Step 4: Simplify right side
    28,462.48x = 623,985,418.90
  5. Step 5: Solve for x
    x = 623,985,418.90/28,462.48
  6. Step 6: Final answer
    x = 21,923.09

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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.