Home / 21,256.90-31,885.35-7,402.66

Finding the Fourth Proportional to 21,256.90, 31,885.35 and 7,402.66

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Solution

The fourth proportional to 21,256.90, 31,885.35 and 7,402.66 is: 11,103.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,256.90 : 31,885.35 = 7,402.66 : x
  2. Step 2: Convert to fraction form
    21,256.90/31,885.35 = 7,402.66/x
  3. Step 3: Cross multiply
    21,256.90x = 31,885.35 × 7,402.66
  4. Step 4: Simplify right side
    21,256.90x = 236,036,405.03
  5. Step 5: Solve for x
    x = 236,036,405.03/21,256.90
  6. Step 6: Final answer
    x = 11,103.99

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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.