Home / 20,436.30-28,122.39-18,084.06

Finding the Fourth Proportional to 20,436.30, 28,122.39 and 18,084.06

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Solution

The fourth proportional to 20,436.30, 28,122.39 and 18,084.06 is: 24,885.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.30 : 28,122.39 = 18,084.06 : x
  2. Step 2: Convert to fraction form
    20,436.30/28,122.39 = 18,084.06/x
  3. Step 3: Cross multiply
    20,436.30x = 28,122.39 × 18,084.06
  4. Step 4: Simplify right side
    20,436.30x = 508,566,988.10
  5. Step 5: Solve for x
    x = 508,566,988.10/20,436.30
  6. Step 6: Final answer
    x = 24,885.47

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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.