Home / 20,018.97-30,031.89-8,925.42

Finding the Fourth Proportional to 20,018.97, 30,031.89 and 8,925.42

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Solution

The fourth proportional to 20,018.97, 30,031.89 and 8,925.42 is: 13,389.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.97 : 30,031.89 = 8,925.42 : x
  2. Step 2: Convert to fraction form
    20,018.97/30,031.89 = 8,925.42/x
  3. Step 3: Cross multiply
    20,018.97x = 30,031.89 × 8,925.42
  4. Step 4: Simplify right side
    20,018.97x = 268,047,231.64
  5. Step 5: Solve for x
    x = 268,047,231.64/20,018.97
  6. Step 6: Final answer
    x = 13,389.66

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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.