Home / 18,989.10-28,460.57-14,293.98

Finding the Fourth Proportional to 18,989.10, 28,460.57 and 14,293.98

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Solution

The fourth proportional to 18,989.10, 28,460.57 and 14,293.98 is: 21,423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.10 : 28,460.57 = 14,293.98 : x
  2. Step 2: Convert to fraction form
    18,989.10/28,460.57 = 14,293.98/x
  3. Step 3: Cross multiply
    18,989.10x = 28,460.57 × 14,293.98
  4. Step 4: Simplify right side
    18,989.10x = 406,814,746.90
  5. Step 5: Solve for x
    x = 406,814,746.90/18,989.10
  6. Step 6: Final answer
    x = 21,423.59

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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.