Home / 15,558.39-21,470.40-8,484.66

Finding the Fourth Proportional to 15,558.39, 21,470.40 and 8,484.66

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Solution

The fourth proportional to 15,558.39, 21,470.40 and 8,484.66 is: 11,708.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.39 : 21,470.40 = 8,484.66 : x
  2. Step 2: Convert to fraction form
    15,558.39/21,470.40 = 8,484.66/x
  3. Step 3: Cross multiply
    15,558.39x = 21,470.40 × 8,484.66
  4. Step 4: Simplify right side
    15,558.39x = 182,169,044.06
  5. Step 5: Solve for x
    x = 182,169,044.06/15,558.39
  6. Step 6: Final answer
    x = 11,708.73

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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.