Home / 15,465.48-21,342.27-8,391.88

Finding the Fourth Proportional to 15,465.48, 21,342.27 and 8,391.88

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Solution

The fourth proportional to 15,465.48, 21,342.27 and 8,391.88 is: 11,580.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.48 : 21,342.27 = 8,391.88 : x
  2. Step 2: Convert to fraction form
    15,465.48/21,342.27 = 8,391.88/x
  3. Step 3: Cross multiply
    15,465.48x = 21,342.27 × 8,391.88
  4. Step 4: Simplify right side
    15,465.48x = 179,101,768.77
  5. Step 5: Solve for x
    x = 179,101,768.77/15,465.48
  6. Step 6: Final answer
    x = 11,580.74

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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.