Home / 20,420.89-30,602.60-16,242.36

Finding the Fourth Proportional to 20,420.89, 30,602.60 and 16,242.36

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Solution

The fourth proportional to 20,420.89, 30,602.60 and 16,242.36 is: 24,340.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,420.89 : 30,602.60 = 16,242.36 : x
  2. Step 2: Convert to fraction form
    20,420.89/30,602.60 = 16,242.36/x
  3. Step 3: Cross multiply
    20,420.89x = 30,602.60 × 16,242.36
  4. Step 4: Simplify right side
    20,420.89x = 497,058,446.14
  5. Step 5: Solve for x
    x = 497,058,446.14/20,420.89
  6. Step 6: Final answer
    x = 24,340.68

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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.