Home / 11,011.17-15,187.55-7,775.77

Finding the Fourth Proportional to 11,011.17, 15,187.55 and 7,775.77

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Solution

The fourth proportional to 11,011.17, 15,187.55 and 7,775.77 is: 10,725.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,011.17 : 15,187.55 = 7,775.77 : x
  2. Step 2: Convert to fraction form
    11,011.17/15,187.55 = 7,775.77/x
  3. Step 3: Cross multiply
    11,011.17x = 15,187.55 × 7,775.77
  4. Step 4: Simplify right side
    11,011.17x = 118,094,933.75
  5. Step 5: Solve for x
    x = 118,094,933.75/11,011.17
  6. Step 6: Final answer
    x = 10,725.02

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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.