Home / 10,639.30-15,953.61-6,198.40

Finding the Fourth Proportional to 10,639.30, 15,953.61 and 6,198.40

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Solution

The fourth proportional to 10,639.30, 15,953.61 and 6,198.40 is: 9,294.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.30 : 15,953.61 = 6,198.40 : x
  2. Step 2: Convert to fraction form
    10,639.30/15,953.61 = 6,198.40/x
  3. Step 3: Cross multiply
    10,639.30x = 15,953.61 × 6,198.40
  4. Step 4: Simplify right side
    10,639.30x = 98,886,793.10
  5. Step 5: Solve for x
    x = 98,886,793.10/10,639.30
  6. Step 6: Final answer
    x = 9,294.49

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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.