Home / 20,425.07-30,645.09-6,386.13

Finding the Fourth Proportional to 20,425.07, 30,645.09 and 6,386.13

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Solution

The fourth proportional to 20,425.07, 30,645.09 and 6,386.13 is: 9,581.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.07 : 30,645.09 = 6,386.13 : x
  2. Step 2: Convert to fraction form
    20,425.07/30,645.09 = 6,386.13/x
  3. Step 3: Cross multiply
    20,425.07x = 30,645.09 × 6,386.13
  4. Step 4: Simplify right side
    20,425.07x = 195,703,528.60
  5. Step 5: Solve for x
    x = 195,703,528.60/20,425.07
  6. Step 6: Final answer
    x = 9,581.54

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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.