Home / 12,688.61-17,515.32-8,601.35

Finding the Fourth Proportional to 12,688.61, 17,515.32 and 8,601.35

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Solution

The fourth proportional to 12,688.61, 17,515.32 and 8,601.35 is: 11,873.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.61 : 17,515.32 = 8,601.35 : x
  2. Step 2: Convert to fraction form
    12,688.61/17,515.32 = 8,601.35/x
  3. Step 3: Cross multiply
    12,688.61x = 17,515.32 × 8,601.35
  4. Step 4: Simplify right side
    12,688.61x = 150,655,397.68
  5. Step 5: Solve for x
    x = 150,655,397.68/12,688.61
  6. Step 6: Final answer
    x = 11,873.28

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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.