Home / 19,990.47-29,976.93-10,628.22

Finding the Fourth Proportional to 19,990.47, 29,976.93 and 10,628.22

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Solution

The fourth proportional to 19,990.47, 29,976.93 and 10,628.22 is: 15,937.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.47 : 29,976.93 = 10,628.22 : x
  2. Step 2: Convert to fraction form
    19,990.47/29,976.93 = 10,628.22/x
  3. Step 3: Cross multiply
    19,990.47x = 29,976.93 × 10,628.22
  4. Step 4: Simplify right side
    19,990.47x = 318,601,406.96
  5. Step 5: Solve for x
    x = 318,601,406.96/19,990.47
  6. Step 6: Final answer
    x = 15,937.66

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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.