Home / 13,689.79-20,518.90-6,185.25

Finding the Fourth Proportional to 13,689.79, 20,518.90 and 6,185.25

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Solution

The fourth proportional to 13,689.79, 20,518.90 and 6,185.25 is: 9,270.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.79 : 20,518.90 = 6,185.25 : x
  2. Step 2: Convert to fraction form
    13,689.79/20,518.90 = 6,185.25/x
  3. Step 3: Cross multiply
    13,689.79x = 20,518.90 × 6,185.25
  4. Step 4: Simplify right side
    13,689.79x = 126,914,510.76
  5. Step 5: Solve for x
    x = 126,914,510.76/13,689.79
  6. Step 6: Final answer
    x = 9,270.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.