Home / 20,436.16-30,666.07-8,589

Finding the Fourth Proportional to 20,436.16, 30,666.07 and 8,589

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Solution

The fourth proportional to 20,436.16, 30,666.07 and 8,589 is: 12,888.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.16 : 30,666.07 = 8,589 : x
  2. Step 2: Convert to fraction form
    20,436.16/30,666.07 = 8,589/x
  3. Step 3: Cross multiply
    20,436.16x = 30,666.07 × 8,589
  4. Step 4: Simplify right side
    20,436.16x = 263,390,875.23
  5. Step 5: Solve for x
    x = 263,390,875.23/20,436.16
  6. Step 6: Final answer
    x = 12,888.47

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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.