Home / 15,220.60-21,004.50-8,506.34

Finding the Fourth Proportional to 15,220.60, 21,004.50 and 8,506.34

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Solution

The fourth proportional to 15,220.60, 21,004.50 and 8,506.34 is: 11,738.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.60 : 21,004.50 = 8,506.34 : x
  2. Step 2: Convert to fraction form
    15,220.60/21,004.50 = 8,506.34/x
  3. Step 3: Cross multiply
    15,220.60x = 21,004.50 × 8,506.34
  4. Step 4: Simplify right side
    15,220.60x = 178,671,292.24
  5. Step 5: Solve for x
    x = 178,671,292.24/15,220.60
  6. Step 6: Final answer
    x = 11,738.78

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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.