Home / 20,437.75-30,639.93-10,579.87

Finding the Fourth Proportional to 20,437.75, 30,639.93 and 10,579.87

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Solution

The fourth proportional to 20,437.75, 30,639.93 and 10,579.87 is: 15,861.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.75 : 30,639.93 = 10,579.87 : x
  2. Step 2: Convert to fraction form
    20,437.75/30,639.93 = 10,579.87/x
  3. Step 3: Cross multiply
    20,437.75x = 30,639.93 × 10,579.87
  4. Step 4: Simplify right side
    20,437.75x = 324,166,476.21
  5. Step 5: Solve for x
    x = 324,166,476.21/20,437.75
  6. Step 6: Final answer
    x = 15,861.16

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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.