Home / 9,491.85-13,100.14-5,515.16

Finding the Fourth Proportional to 9,491.85, 13,100.14 and 5,515.16

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Solution

The fourth proportional to 9,491.85, 13,100.14 and 5,515.16 is: 7,611.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,491.85 : 13,100.14 = 5,515.16 : x
  2. Step 2: Convert to fraction form
    9,491.85/13,100.14 = 5,515.16/x
  3. Step 3: Cross multiply
    9,491.85x = 13,100.14 × 5,515.16
  4. Step 4: Simplify right side
    9,491.85x = 72,249,275.05
  5. Step 5: Solve for x
    x = 72,249,275.05/9,491.85
  6. Step 6: Final answer
    x = 7,611.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.