Home / 15,465.30-21,342.06-8,391.66

Finding the Fourth Proportional to 15,465.30, 21,342.06 and 8,391.66

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Solution

The fourth proportional to 15,465.30, 21,342.06 and 8,391.66 is: 11,580.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.30 : 21,342.06 = 8,391.66 : x
  2. Step 2: Convert to fraction form
    15,465.30/21,342.06 = 8,391.66/x
  3. Step 3: Cross multiply
    15,465.30x = 21,342.06 × 8,391.66
  4. Step 4: Simplify right side
    15,465.30x = 179,095,311.22
  5. Step 5: Solve for x
    x = 179,095,311.22/15,465.30
  6. Step 6: Final answer
    x = 11,580.46

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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.