Home / 20,897.82-31,347.96-8,417.76

Finding the Fourth Proportional to 20,897.82, 31,347.96 and 8,417.76

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Solution

The fourth proportional to 20,897.82, 31,347.96 and 8,417.76 is: 12,627.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.82 : 31,347.96 = 8,417.76 : x
  2. Step 2: Convert to fraction form
    20,897.82/31,347.96 = 8,417.76/x
  3. Step 3: Cross multiply
    20,897.82x = 31,347.96 × 8,417.76
  4. Step 4: Simplify right side
    20,897.82x = 263,879,603.77
  5. Step 5: Solve for x
    x = 263,879,603.77/20,897.82
  6. Step 6: Final answer
    x = 12,627.14

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1.5x scale

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.