Home / 20,972.63-28,942.43-11,541.39

Finding the Fourth Proportional to 20,972.63, 28,942.43 and 11,541.39

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Solution

The fourth proportional to 20,972.63, 28,942.43 and 11,541.39 is: 15,927.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.63 : 28,942.43 = 11,541.39 : x
  2. Step 2: Convert to fraction form
    20,972.63/28,942.43 = 11,541.39/x
  3. Step 3: Cross multiply
    20,972.63x = 28,942.43 × 11,541.39
  4. Step 4: Simplify right side
    20,972.63x = 334,035,814.47
  5. Step 5: Solve for x
    x = 334,035,814.47/20,972.63
  6. Step 6: Final answer
    x = 15,927.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.