Home / 20,511.79-30,756.72-10,626.55

Finding the Fourth Proportional to 20,511.79, 30,756.72 and 10,626.55

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Solution

The fourth proportional to 20,511.79, 30,756.72 and 10,626.55 is: 15,934.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.79 : 30,756.72 = 10,626.55 : x
  2. Step 2: Convert to fraction form
    20,511.79/30,756.72 = 10,626.55/x
  3. Step 3: Cross multiply
    20,511.79x = 30,756.72 × 10,626.55
  4. Step 4: Simplify right side
    20,511.79x = 326,837,822.92
  5. Step 5: Solve for x
    x = 326,837,822.92/20,511.79
  6. Step 6: Final answer
    x = 15,934.14

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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.