Home / 21,032.91-31,540.14-7,876.06

Finding the Fourth Proportional to 21,032.91, 31,540.14 and 7,876.06

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Solution

The fourth proportional to 21,032.91, 31,540.14 and 7,876.06 is: 11,810.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032.91 : 31,540.14 = 7,876.06 : x
  2. Step 2: Convert to fraction form
    21,032.91/31,540.14 = 7,876.06/x
  3. Step 3: Cross multiply
    21,032.91x = 31,540.14 × 7,876.06
  4. Step 4: Simplify right side
    21,032.91x = 248,411,956.20
  5. Step 5: Solve for x
    x = 248,411,956.20/21,032.91
  6. Step 6: Final answer
    x = 11,810.63

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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.