Home / 11,505.92-15,875.84-6,790.72

Finding the Fourth Proportional to 11,505.92, 15,875.84 and 6,790.72

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Solution

The fourth proportional to 11,505.92, 15,875.84 and 6,790.72 is: 9,369.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,505.92 : 15,875.84 = 6,790.72 : x
  2. Step 2: Convert to fraction form
    11,505.92/15,875.84 = 6,790.72/x
  3. Step 3: Cross multiply
    11,505.92x = 15,875.84 × 6,790.72
  4. Step 4: Simplify right side
    11,505.92x = 107,808,384.20
  5. Step 5: Solve for x
    x = 107,808,384.20/11,505.92
  6. Step 6: Final answer
    x = 9,369.82

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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.