Home / 10,639.32-15,920.10-6,258.84

Finding the Fourth Proportional to 10,639.32, 15,920.10 and 6,258.84

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Solution

The fourth proportional to 10,639.32, 15,920.10 and 6,258.84 is: 9,365.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.32 : 15,920.10 = 6,258.84 : x
  2. Step 2: Convert to fraction form
    10,639.32/15,920.10 = 6,258.84/x
  3. Step 3: Cross multiply
    10,639.32x = 15,920.10 × 6,258.84
  4. Step 4: Simplify right side
    10,639.32x = 99,641,358.68
  5. Step 5: Solve for x
    x = 99,641,358.68/10,639.32
  6. Step 6: Final answer
    x = 9,365.39

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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.