Home / 20,001.87-30,011.94-10,639.53

Finding the Fourth Proportional to 20,001.87, 30,011.94 and 10,639.53

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Solution

The fourth proportional to 20,001.87, 30,011.94 and 10,639.53 is: 15,964.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,001.87 : 30,011.94 = 10,639.53 : x
  2. Step 2: Convert to fraction form
    20,001.87/30,011.94 = 10,639.53/x
  3. Step 3: Cross multiply
    20,001.87x = 30,011.94 × 10,639.53
  4. Step 4: Simplify right side
    20,001.87x = 319,312,935.99
  5. Step 5: Solve for x
    x = 319,312,935.99/20,001.87
  6. Step 6: Final answer
    x = 15,964.15

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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.