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Finding the Fourth Proportional to 15,260.60, 21,060.60 and 9,969.68

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Solution

The fourth proportional to 15,260.60, 21,060.60 and 9,969.68 is: 13,758.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,260.60 : 21,060.60 = 9,969.68 : x
  2. Step 2: Convert to fraction form
    15,260.60/21,060.60 = 9,969.68/x
  3. Step 3: Cross multiply
    15,260.60x = 21,060.60 × 9,969.68
  4. Step 4: Simplify right side
    15,260.60x = 209,967,442.61
  5. Step 5: Solve for x
    x = 209,967,442.61/15,260.60
  6. Step 6: Final answer
    x = 13,758.79

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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.