Home / 20,351.43-28,089.05-13,995.27

Finding the Fourth Proportional to 20,351.43, 28,089.05 and 13,995.27

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Solution

The fourth proportional to 20,351.43, 28,089.05 and 13,995.27 is: 19,316.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.43 : 28,089.05 = 13,995.27 : x
  2. Step 2: Convert to fraction form
    20,351.43/28,089.05 = 13,995.27/x
  3. Step 3: Cross multiply
    20,351.43x = 28,089.05 × 13,995.27
  4. Step 4: Simplify right side
    20,351.43x = 393,113,838.79
  5. Step 5: Solve for x
    x = 393,113,838.79/20,351.43
  6. Step 6: Final answer
    x = 19,316.28

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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.