Home / 21,024.57-31,556.54-10,643.61

Finding the Fourth Proportional to 21,024.57, 31,556.54 and 10,643.61

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Solution

The fourth proportional to 21,024.57, 31,556.54 and 10,643.61 is: 15,975.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024.57 : 31,556.54 = 10,643.61 : x
  2. Step 2: Convert to fraction form
    21,024.57/31,556.54 = 10,643.61/x
  3. Step 3: Cross multiply
    21,024.57x = 31,556.54 × 10,643.61
  4. Step 4: Simplify right side
    21,024.57x = 335,875,451.49
  5. Step 5: Solve for x
    x = 335,875,451.49/21,024.57
  6. Step 6: Final answer
    x = 15,975.38

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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.