Home / 15,072.90-20,799.81-8,358

Finding the Fourth Proportional to 15,072.90, 20,799.81 and 8,358

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Solution

The fourth proportional to 15,072.90, 20,799.81 and 8,358 is: 11,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.90 : 20,799.81 = 8,358 : x
  2. Step 2: Convert to fraction form
    15,072.90/20,799.81 = 8,358/x
  3. Step 3: Cross multiply
    15,072.90x = 20,799.81 × 8,358
  4. Step 4: Simplify right side
    15,072.90x = 173,844,811.98
  5. Step 5: Solve for x
    x = 173,844,811.98/15,072.90
  6. Step 6: Final answer
    x = 11,533.60

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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.