Home / 20,639.01-30,929.34-10,258.05

Finding the Fourth Proportional to 20,639.01, 30,929.34 and 10,258.05

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Solution

The fourth proportional to 20,639.01, 30,929.34 and 10,258.05 is: 15,372.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.01 : 30,929.34 = 10,258.05 : x
  2. Step 2: Convert to fraction form
    20,639.01/30,929.34 = 10,258.05/x
  3. Step 3: Cross multiply
    20,639.01x = 30,929.34 × 10,258.05
  4. Step 4: Simplify right side
    20,639.01x = 317,274,716.19
  5. Step 5: Solve for x
    x = 317,274,716.19/20,639.01
  6. Step 6: Final answer
    x = 15,372.57

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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.