Home / 9,647.28-13,349.61-8,228.70

Finding the Fourth Proportional to 9,647.28, 13,349.61 and 8,228.70

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Solution

The fourth proportional to 9,647.28, 13,349.61 and 8,228.70 is: 11,386.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,647.28 : 13,349.61 = 8,228.70 : x
  2. Step 2: Convert to fraction form
    9,647.28/13,349.61 = 8,228.70/x
  3. Step 3: Cross multiply
    9,647.28x = 13,349.61 × 8,228.70
  4. Step 4: Simplify right side
    9,647.28x = 109,849,935.81
  5. Step 5: Solve for x
    x = 109,849,935.81/9,647.28
  6. Step 6: Final answer
    x = 11,386.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.