Home / 15,072.21-20,798.64-8,357.59

Finding the Fourth Proportional to 15,072.21, 20,798.64 and 8,357.59

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Solution

The fourth proportional to 15,072.21, 20,798.64 and 8,357.59 is: 11,532.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.21 : 20,798.64 = 8,357.59 : x
  2. Step 2: Convert to fraction form
    15,072.21/20,798.64 = 8,357.59/x
  3. Step 3: Cross multiply
    15,072.21x = 20,798.64 × 8,357.59
  4. Step 4: Simplify right side
    15,072.21x = 173,826,463.89
  5. Step 5: Solve for x
    x = 173,826,463.89/15,072.21
  6. Step 6: Final answer
    x = 11,532.91

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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.