Home / 13,188.47-19,740.22-8,689.23

Finding the Fourth Proportional to 13,188.47, 19,740.22 and 8,689.23

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Solution

The fourth proportional to 13,188.47, 19,740.22 and 8,689.23 is: 13,005.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.47 : 19,740.22 = 8,689.23 : x
  2. Step 2: Convert to fraction form
    13,188.47/19,740.22 = 8,689.23/x
  3. Step 3: Cross multiply
    13,188.47x = 19,740.22 × 8,689.23
  4. Step 4: Simplify right side
    13,188.47x = 171,527,290.11
  5. Step 5: Solve for x
    x = 171,527,290.11/13,188.47
  6. Step 6: Final answer
    x = 13,005.86

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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.