Home / 10,516.71-15,774.93-3,121.14

Finding the Fourth Proportional to 10,516.71, 15,774.93 and 3,121.14

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Solution

The fourth proportional to 10,516.71, 15,774.93 and 3,121.14 is: 4,681.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,516.71 : 15,774.93 = 3,121.14 : x
  2. Step 2: Convert to fraction form
    10,516.71/15,774.93 = 3,121.14/x
  3. Step 3: Cross multiply
    10,516.71x = 15,774.93 × 3,121.14
  4. Step 4: Simplify right side
    10,516.71x = 49,235,765.02
  5. Step 5: Solve for x
    x = 49,235,765.02/10,516.71
  6. Step 6: Final answer
    x = 4,681.67

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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.