Home / 15,401.30-21,255.98-9,354.60

Finding the Fourth Proportional to 15,401.30, 21,255.98 and 9,354.60

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Solution

The fourth proportional to 15,401.30, 21,255.98 and 9,354.60 is: 12,910.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,401.30 : 21,255.98 = 9,354.60 : x
  2. Step 2: Convert to fraction form
    15,401.30/21,255.98 = 9,354.60/x
  3. Step 3: Cross multiply
    15,401.30x = 21,255.98 × 9,354.60
  4. Step 4: Simplify right side
    15,401.30x = 198,841,190.51
  5. Step 5: Solve for x
    x = 198,841,190.51/15,401.30
  6. Step 6: Final answer
    x = 12,910.68

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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.