Home / 34,740-47,944.85-21,308.18

Finding the Fourth Proportional to 34,740, 47,944.85 and 21,308.18

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Solution

The fourth proportional to 34,740, 47,944.85 and 21,308.18 is: 29,407.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,740 : 47,944.85 = 21,308.18 : x
  2. Step 2: Convert to fraction form
    34,740/47,944.85 = 21,308.18/x
  3. Step 3: Cross multiply
    34,740x = 47,944.85 × 21,308.18
  4. Step 4: Simplify right side
    34,740x = 1,021,617,147.61
  5. Step 5: Solve for x
    x = 1,021,617,147.61/34,740
  6. Step 6: Final answer
    x = 29,407.52

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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.