Home / 11,146.87-15,390.26-8,507.83

Finding the Fourth Proportional to 11,146.87, 15,390.26 and 8,507.83

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Solution

The fourth proportional to 11,146.87, 15,390.26 and 8,507.83 is: 11,746.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,146.87 : 15,390.26 = 8,507.83 : x
  2. Step 2: Convert to fraction form
    11,146.87/15,390.26 = 8,507.83/x
  3. Step 3: Cross multiply
    11,146.87x = 15,390.26 × 8,507.83
  4. Step 4: Simplify right side
    11,146.87x = 130,937,715.74
  5. Step 5: Solve for x
    x = 130,937,715.74/11,146.87
  6. Step 6: Final answer
    x = 11,746.59

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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.