Home / 15,465.32-21,342.05-8,391.59

Finding the Fourth Proportional to 15,465.32, 21,342.05 and 8,391.59

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Solution

The fourth proportional to 15,465.32, 21,342.05 and 8,391.59 is: 11,580.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.32 : 21,342.05 = 8,391.59 : x
  2. Step 2: Convert to fraction form
    15,465.32/21,342.05 = 8,391.59/x
  3. Step 3: Cross multiply
    15,465.32x = 21,342.05 × 8,391.59
  4. Step 4: Simplify right side
    15,465.32x = 179,093,691.40
  5. Step 5: Solve for x
    x = 179,093,691.40/15,465.32
  6. Step 6: Final answer
    x = 11,580.34

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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.