Home / 15,289.97-21,099.90-8,575.58

Finding the Fourth Proportional to 15,289.97, 21,099.90 and 8,575.58

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Solution

The fourth proportional to 15,289.97, 21,099.90 and 8,575.58 is: 11,834.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.97 : 21,099.90 = 8,575.58 : x
  2. Step 2: Convert to fraction form
    15,289.97/21,099.90 = 8,575.58/x
  3. Step 3: Cross multiply
    15,289.97x = 21,099.90 × 8,575.58
  4. Step 4: Simplify right side
    15,289.97x = 180,943,880.44
  5. Step 5: Solve for x
    x = 180,943,880.44/15,289.97
  6. Step 6: Final answer
    x = 11,834.16

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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.