Home / 21,035.42-31,556.04-7,706.70

Finding the Fourth Proportional to 21,035.42, 31,556.04 and 7,706.70

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Solution

The fourth proportional to 21,035.42, 31,556.04 and 7,706.70 is: 11,561.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.42 : 31,556.04 = 7,706.70 : x
  2. Step 2: Convert to fraction form
    21,035.42/31,556.04 = 7,706.70/x
  3. Step 3: Cross multiply
    21,035.42x = 31,556.04 × 7,706.70
  4. Step 4: Simplify right side
    21,035.42x = 243,192,933.47
  5. Step 5: Solve for x
    x = 243,192,933.47/21,035.42
  6. Step 6: Final answer
    x = 11,561.12

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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.