Home / 20,021.76-30,043.34-13,000.13

Finding the Fourth Proportional to 20,021.76, 30,043.34 and 13,000.13

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Solution

The fourth proportional to 20,021.76, 30,043.34 and 13,000.13 is: 19,507.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.76 : 30,043.34 = 13,000.13 : x
  2. Step 2: Convert to fraction form
    20,021.76/30,043.34 = 13,000.13/x
  3. Step 3: Cross multiply
    20,021.76x = 30,043.34 × 13,000.13
  4. Step 4: Simplify right side
    20,021.76x = 390,567,110.42
  5. Step 5: Solve for x
    x = 390,567,110.42/20,021.76
  6. Step 6: Final answer
    x = 19,507.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.