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Finding the Fourth Proportional to 28,887.48, 43,337.70 and 10,419.48

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Solution

The fourth proportional to 28,887.48, 43,337.70 and 10,419.48 is: 15,631.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,887.48 : 43,337.70 = 10,419.48 : x
  2. Step 2: Convert to fraction form
    28,887.48/43,337.70 = 10,419.48/x
  3. Step 3: Cross multiply
    28,887.48x = 43,337.70 × 10,419.48
  4. Step 4: Simplify right side
    28,887.48x = 451,556,298.40
  5. Step 5: Solve for x
    x = 451,556,298.40/28,887.48
  6. Step 6: Final answer
    x = 15,631.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.