Home / 13,087.35-18,056.12-8,615.61

Finding the Fourth Proportional to 13,087.35, 18,056.12 and 8,615.61

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Solution

The fourth proportional to 13,087.35, 18,056.12 and 8,615.61 is: 11,886.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,087.35 : 18,056.12 = 8,615.61 : x
  2. Step 2: Convert to fraction form
    13,087.35/18,056.12 = 8,615.61/x
  3. Step 3: Cross multiply
    13,087.35x = 18,056.12 × 8,615.61
  4. Step 4: Simplify right side
    13,087.35x = 155,564,444.96
  5. Step 5: Solve for x
    x = 155,564,444.96/13,087.35
  6. Step 6: Final answer
    x = 11,886.63

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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.