Home / 15,431.94-21,295.98-8,358.35

Finding the Fourth Proportional to 15,431.94, 21,295.98 and 8,358.35

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Solution

The fourth proportional to 15,431.94, 21,295.98 and 8,358.35 is: 11,534.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.94 : 21,295.98 = 8,358.35 : x
  2. Step 2: Convert to fraction form
    15,431.94/21,295.98 = 8,358.35/x
  3. Step 3: Cross multiply
    15,431.94x = 21,295.98 × 8,358.35
  4. Step 4: Simplify right side
    15,431.94x = 177,999,147.95
  5. Step 5: Solve for x
    x = 177,999,147.95/15,431.94
  6. Step 6: Final answer
    x = 11,534.46

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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.