Home / 20,435.75-30,474.79-20,248.91

Finding the Fourth Proportional to 20,435.75, 30,474.79 and 20,248.91

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Solution

The fourth proportional to 20,435.75, 30,474.79 and 20,248.91 is: 30,196.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.75 : 30,474.79 = 20,248.91 : x
  2. Step 2: Convert to fraction form
    20,435.75/30,474.79 = 20,248.91/x
  3. Step 3: Cross multiply
    20,435.75x = 30,474.79 × 20,248.91
  4. Step 4: Simplify right side
    20,435.75x = 617,081,127.60
  5. Step 5: Solve for x
    x = 617,081,127.60/20,435.75
  6. Step 6: Final answer
    x = 30,196.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.