Home / 20,897.41-31,351.18-12,018.42

Finding the Fourth Proportional to 20,897.41, 31,351.18 and 12,018.42

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Solution

The fourth proportional to 20,897.41, 31,351.18 and 12,018.42 is: 18,030.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.41 : 31,351.18 = 12,018.42 : x
  2. Step 2: Convert to fraction form
    20,897.41/31,351.18 = 12,018.42/x
  3. Step 3: Cross multiply
    20,897.41x = 31,351.18 × 12,018.42
  4. Step 4: Simplify right side
    20,897.41x = 376,791,588.64
  5. Step 5: Solve for x
    x = 376,791,588.64/20,897.41
  6. Step 6: Final answer
    x = 18,030.54

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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.