Home / 10,785.81-16,156.85-5,580.75

Finding the Fourth Proportional to 10,785.81, 16,156.85 and 5,580.75

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Solution

The fourth proportional to 10,785.81, 16,156.85 and 5,580.75 is: 8,359.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.81 : 16,156.85 = 5,580.75 : x
  2. Step 2: Convert to fraction form
    10,785.81/16,156.85 = 5,580.75/x
  3. Step 3: Cross multiply
    10,785.81x = 16,156.85 × 5,580.75
  4. Step 4: Simplify right side
    10,785.81x = 90,167,312.73
  5. Step 5: Solve for x
    x = 90,167,312.73/10,785.81
  6. Step 6: Final answer
    x = 8,359.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.