Home / 11,069.81-15,275.78-6,289.12

Finding the Fourth Proportional to 11,069.81, 15,275.78 and 6,289.12

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Solution

The fourth proportional to 11,069.81, 15,275.78 and 6,289.12 is: 8,678.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,069.81 : 15,275.78 = 6,289.12 : x
  2. Step 2: Convert to fraction form
    11,069.81/15,275.78 = 6,289.12/x
  3. Step 3: Cross multiply
    11,069.81x = 15,275.78 × 6,289.12
  4. Step 4: Simplify right side
    11,069.81x = 96,071,269.61
  5. Step 5: Solve for x
    x = 96,071,269.61/11,069.81
  6. Step 6: Final answer
    x = 8,678.68

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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.