Home / 20,897.50-31,349.16-6,107.50

Finding the Fourth Proportional to 20,897.50, 31,349.16 and 6,107.50

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Solution

The fourth proportional to 20,897.50, 31,349.16 and 6,107.50 is: 9,162.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.50 : 31,349.16 = 6,107.50 : x
  2. Step 2: Convert to fraction form
    20,897.50/31,349.16 = 6,107.50/x
  3. Step 3: Cross multiply
    20,897.50x = 31,349.16 × 6,107.50
  4. Step 4: Simplify right side
    20,897.50x = 191,464,994.70
  5. Step 5: Solve for x
    x = 191,464,994.70/20,897.50
  6. Step 6: Final answer
    x = 9,162.10

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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.