Home / 20,975.27-28,946.03-11,415.24

Finding the Fourth Proportional to 20,975.27, 28,946.03 and 11,415.24

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Solution

The fourth proportional to 20,975.27, 28,946.03 and 11,415.24 is: 15,753.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.27 : 28,946.03 = 11,415.24 : x
  2. Step 2: Convert to fraction form
    20,975.27/28,946.03 = 11,415.24/x
  3. Step 3: Cross multiply
    20,975.27x = 28,946.03 × 11,415.24
  4. Step 4: Simplify right side
    20,975.27x = 330,425,822.42
  5. Step 5: Solve for x
    x = 330,425,822.42/20,975.27
  6. Step 6: Final answer
    x = 15,753.12

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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.