Home / 38,905.99-53,689.56-21,910.16

Finding the Fourth Proportional to 38,905.99, 53,689.56 and 21,910.16

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Solution

The fourth proportional to 38,905.99, 53,689.56 and 21,910.16 is: 30,235.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,905.99 : 53,689.56 = 21,910.16 : x
  2. Step 2: Convert to fraction form
    38,905.99/53,689.56 = 21,910.16/x
  3. Step 3: Cross multiply
    38,905.99x = 53,689.56 × 21,910.16
  4. Step 4: Simplify right side
    38,905.99x = 1,176,346,901.99
  5. Step 5: Solve for x
    x = 1,176,346,901.99/38,905.99
  6. Step 6: Final answer
    x = 30,235.63

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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.