Home / 20,007.78-30,030.49-10,154.13

Finding the Fourth Proportional to 20,007.78, 30,030.49 and 10,154.13

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Solution

The fourth proportional to 20,007.78, 30,030.49 and 10,154.13 is: 15,240.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,007.78 : 30,030.49 = 10,154.13 : x
  2. Step 2: Convert to fraction form
    20,007.78/30,030.49 = 10,154.13/x
  3. Step 3: Cross multiply
    20,007.78x = 30,030.49 × 10,154.13
  4. Step 4: Simplify right side
    20,007.78x = 304,933,499.42
  5. Step 5: Solve for x
    x = 304,933,499.42/20,007.78
  6. Step 6: Final answer
    x = 15,240.75

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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.