Home / 20,592.49-28,420.68-13,039.53

Finding the Fourth Proportional to 20,592.49, 28,420.68 and 13,039.53

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Solution

The fourth proportional to 20,592.49, 28,420.68 and 13,039.53 is: 17,996.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,592.49 : 28,420.68 = 13,039.53 : x
  2. Step 2: Convert to fraction form
    20,592.49/28,420.68 = 13,039.53/x
  3. Step 3: Cross multiply
    20,592.49x = 28,420.68 × 13,039.53
  4. Step 4: Simplify right side
    20,592.49x = 370,592,309.48
  5. Step 5: Solve for x
    x = 370,592,309.48/20,592.49
  6. Step 6: Final answer
    x = 17,996.48

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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.