Home / 11,488.89-15,856.14-7,011.69

Finding the Fourth Proportional to 11,488.89, 15,856.14 and 7,011.69

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Solution

The fourth proportional to 11,488.89, 15,856.14 and 7,011.69 is: 9,677.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,488.89 : 15,856.14 = 7,011.69 : x
  2. Step 2: Convert to fraction form
    11,488.89/15,856.14 = 7,011.69/x
  3. Step 3: Cross multiply
    11,488.89x = 15,856.14 × 7,011.69
  4. Step 4: Simplify right side
    11,488.89x = 111,178,338.28
  5. Step 5: Solve for x
    x = 111,178,338.28/11,488.89
  6. Step 6: Final answer
    x = 9,677.03

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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.