Home / 13,217.51-18,235.15-8,437.64

Finding the Fourth Proportional to 13,217.51, 18,235.15 and 8,437.64

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Solution

The fourth proportional to 13,217.51, 18,235.15 and 8,437.64 is: 11,640.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.51 : 18,235.15 = 8,437.64 : x
  2. Step 2: Convert to fraction form
    13,217.51/18,235.15 = 8,437.64/x
  3. Step 3: Cross multiply
    13,217.51x = 18,235.15 × 8,437.64
  4. Step 4: Simplify right side
    13,217.51x = 153,861,518.78
  5. Step 5: Solve for x
    x = 153,861,518.78/13,217.51
  6. Step 6: Final answer
    x = 11,640.73

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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.