Home / 15,558.06-21,470.13-8,484.54

Finding the Fourth Proportional to 15,558.06, 21,470.13 and 8,484.54

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Solution

The fourth proportional to 15,558.06, 21,470.13 and 8,484.54 is: 11,708.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.06 : 21,470.13 = 8,484.54 : x
  2. Step 2: Convert to fraction form
    15,558.06/21,470.13 = 8,484.54/x
  3. Step 3: Cross multiply
    15,558.06x = 21,470.13 × 8,484.54
  4. Step 4: Simplify right side
    15,558.06x = 182,164,176.79
  5. Step 5: Solve for x
    x = 182,164,176.79/15,558.06
  6. Step 6: Final answer
    x = 11,708.67

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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.