Home / 11,785.05-16,263.52-6,407.55

Finding the Fourth Proportional to 11,785.05, 16,263.52 and 6,407.55

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Solution

The fourth proportional to 11,785.05, 16,263.52 and 6,407.55 is: 8,842.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,785.05 : 16,263.52 = 6,407.55 : x
  2. Step 2: Convert to fraction form
    11,785.05/16,263.52 = 6,407.55/x
  3. Step 3: Cross multiply
    11,785.05x = 16,263.52 × 6,407.55
  4. Step 4: Simplify right side
    11,785.05x = 104,209,301.56
  5. Step 5: Solve for x
    x = 104,209,301.56/11,785.05
  6. Step 6: Final answer
    x = 8,842.50

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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.