Home / 20,018.76-29,989.26-9,637.80

Finding the Fourth Proportional to 20,018.76, 29,989.26 and 9,637.80

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Solution

The fourth proportional to 20,018.76, 29,989.26 and 9,637.80 is: 14,437.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.76 : 29,989.26 = 9,637.80 : x
  2. Step 2: Convert to fraction form
    20,018.76/29,989.26 = 9,637.80/x
  3. Step 3: Cross multiply
    20,018.76x = 29,989.26 × 9,637.80
  4. Step 4: Simplify right side
    20,018.76x = 289,030,490.03
  5. Step 5: Solve for x
    x = 289,030,490.03/20,018.76
  6. Step 6: Final answer
    x = 14,437.98

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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.