Home / 18,701.10-28,084.05-18,117.90

Finding the Fourth Proportional to 18,701.10, 28,084.05 and 18,117.90

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Solution

The fourth proportional to 18,701.10, 28,084.05 and 18,117.90 is: 27,208.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.10 : 28,084.05 = 18,117.90 : x
  2. Step 2: Convert to fraction form
    18,701.10/28,084.05 = 18,117.90/x
  3. Step 3: Cross multiply
    18,701.10x = 28,084.05 × 18,117.90
  4. Step 4: Simplify right side
    18,701.10x = 508,824,009.50
  5. Step 5: Solve for x
    x = 508,824,009.50/18,701.10
  6. Step 6: Final answer
    x = 27,208.24

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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.