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Finding the Fourth Proportional to 34,085.60, 51,135.60 and 10,391.20

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Solution

The fourth proportional to 34,085.60, 51,135.60 and 10,391.20 is: 15,588.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,085.60 : 51,135.60 = 10,391.20 : x
  2. Step 2: Convert to fraction form
    34,085.60/51,135.60 = 10,391.20/x
  3. Step 3: Cross multiply
    34,085.60x = 51,135.60 × 10,391.20
  4. Step 4: Simplify right side
    34,085.60x = 531,360,246.72
  5. Step 5: Solve for x
    x = 531,360,246.72/34,085.60
  6. Step 6: Final answer
    x = 15,588.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.