Home / 20,258.47-30,387.45-6,931.33

Finding the Fourth Proportional to 20,258.47, 30,387.45 and 6,931.33

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Solution

The fourth proportional to 20,258.47, 30,387.45 and 6,931.33 is: 10,396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.47 : 30,387.45 = 6,931.33 : x
  2. Step 2: Convert to fraction form
    20,258.47/30,387.45 = 6,931.33/x
  3. Step 3: Cross multiply
    20,258.47x = 30,387.45 × 6,931.33
  4. Step 4: Simplify right side
    20,258.47x = 210,625,443.81
  5. Step 5: Solve for x
    x = 210,625,443.81/20,258.47
  6. Step 6: Final answer
    x = 10,396.91

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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.