Home / 9,915.07-13,682.68-5,377.68

Finding the Fourth Proportional to 9,915.07, 13,682.68 and 5,377.68

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Solution

The fourth proportional to 9,915.07, 13,682.68 and 5,377.68 is: 7,421.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.07 : 13,682.68 = 5,377.68 : x
  2. Step 2: Convert to fraction form
    9,915.07/13,682.68 = 5,377.68/x
  3. Step 3: Cross multiply
    9,915.07x = 13,682.68 × 5,377.68
  4. Step 4: Simplify right side
    9,915.07x = 73,581,074.58
  5. Step 5: Solve for x
    x = 73,581,074.58/9,915.07
  6. Step 6: Final answer
    x = 7,421.14

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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.