Home / 20,602.04-28,420.35-13,035.62

Finding the Fourth Proportional to 20,602.04, 28,420.35 and 13,035.62

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Solution

The fourth proportional to 20,602.04, 28,420.35 and 13,035.62 is: 17,982.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.04 : 28,420.35 = 13,035.62 : x
  2. Step 2: Convert to fraction form
    20,602.04/28,420.35 = 13,035.62/x
  3. Step 3: Cross multiply
    20,602.04x = 28,420.35 × 13,035.62
  4. Step 4: Simplify right side
    20,602.04x = 370,476,882.87
  5. Step 5: Solve for x
    x = 370,476,882.87/20,602.04
  6. Step 6: Final answer
    x = 17,982.53

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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.