Home / 21,265.74-31,905.77-9,417.87

Finding the Fourth Proportional to 21,265.74, 31,905.77 and 9,417.87

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Solution

The fourth proportional to 21,265.74, 31,905.77 and 9,417.87 is: 14,129.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265.74 : 31,905.77 = 9,417.87 : x
  2. Step 2: Convert to fraction form
    21,265.74/31,905.77 = 9,417.87/x
  3. Step 3: Cross multiply
    21,265.74x = 31,905.77 × 9,417.87
  4. Step 4: Simplify right side
    21,265.74x = 300,484,347.02
  5. Step 5: Solve for x
    x = 300,484,347.02/21,265.74
  6. Step 6: Final answer
    x = 14,129.97

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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.