Home / 21,136.48-31,701.84-9,446.56

Finding the Fourth Proportional to 21,136.48, 31,701.84 and 9,446.56

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Solution

The fourth proportional to 21,136.48, 31,701.84 and 9,446.56 is: 14,168.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.48 : 31,701.84 = 9,446.56 : x
  2. Step 2: Convert to fraction form
    21,136.48/31,701.84 = 9,446.56/x
  3. Step 3: Cross multiply
    21,136.48x = 31,701.84 × 9,446.56
  4. Step 4: Simplify right side
    21,136.48x = 299,473,333.67
  5. Step 5: Solve for x
    x = 299,473,333.67/21,136.48
  6. Step 6: Final answer
    x = 14,168.55

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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.