Home / 21,214.76-31,796.01-8,726.99

Finding the Fourth Proportional to 21,214.76, 31,796.01 and 8,726.99

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Solution

The fourth proportional to 21,214.76, 31,796.01 and 8,726.99 is: 13,079.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.76 : 31,796.01 = 8,726.99 : x
  2. Step 2: Convert to fraction form
    21,214.76/31,796.01 = 8,726.99/x
  3. Step 3: Cross multiply
    21,214.76x = 31,796.01 × 8,726.99
  4. Step 4: Simplify right side
    21,214.76x = 277,483,461.31
  5. Step 5: Solve for x
    x = 277,483,461.31/21,214.76
  6. Step 6: Final answer
    x = 13,079.74

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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.