Home / 20,417.18-30,628.49-6,378.17

Finding the Fourth Proportional to 20,417.18, 30,628.49 and 6,378.17

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Solution

The fourth proportional to 20,417.18, 30,628.49 and 6,378.17 is: 9,568.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.18 : 30,628.49 = 6,378.17 : x
  2. Step 2: Convert to fraction form
    20,417.18/30,628.49 = 6,378.17/x
  3. Step 3: Cross multiply
    20,417.18x = 30,628.49 × 6,378.17
  4. Step 4: Simplify right side
    20,417.18x = 195,353,531.03
  5. Step 5: Solve for x
    x = 195,353,531.03/20,417.18
  6. Step 6: Final answer
    x = 9,568.10

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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.