Home / 21,323.20-31,943.23-12,982.53

Finding the Fourth Proportional to 21,323.20, 31,943.23 and 12,982.53

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Solution

The fourth proportional to 21,323.20, 31,943.23 and 12,982.53 is: 19,448.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,323.20 : 31,943.23 = 12,982.53 : x
  2. Step 2: Convert to fraction form
    21,323.20/31,943.23 = 12,982.53/x
  3. Step 3: Cross multiply
    21,323.20x = 31,943.23 × 12,982.53
  4. Step 4: Simplify right side
    21,323.20x = 414,703,941.77
  5. Step 5: Solve for x
    x = 414,703,941.77/21,323.20
  6. Step 6: Final answer
    x = 19,448.49

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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.