Home / 13,431.61-18,527.40-8,657.88

Finding the Fourth Proportional to 13,431.61, 18,527.40 and 8,657.88

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Solution

The fourth proportional to 13,431.61, 18,527.40 and 8,657.88 is: 11,942.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.61 : 18,527.40 = 8,657.88 : x
  2. Step 2: Convert to fraction form
    13,431.61/18,527.40 = 8,657.88/x
  3. Step 3: Cross multiply
    13,431.61x = 18,527.40 × 8,657.88
  4. Step 4: Simplify right side
    13,431.61x = 160,408,005.91
  5. Step 5: Solve for x
    x = 160,408,005.91/13,431.61
  6. Step 6: Final answer
    x = 11,942.57

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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.