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Finding the Fourth Proportional to 15,048.20, 20,762.78 and 9,736.68

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Solution

The fourth proportional to 15,048.20, 20,762.78 and 9,736.68 is: 13,434.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,048.20 : 20,762.78 = 9,736.68 : x
  2. Step 2: Convert to fraction form
    15,048.20/20,762.78 = 9,736.68/x
  3. Step 3: Cross multiply
    15,048.20x = 20,762.78 × 9,736.68
  4. Step 4: Simplify right side
    15,048.20x = 202,160,544.77
  5. Step 5: Solve for x
    x = 202,160,544.77/15,048.20
  6. Step 6: Final answer
    x = 13,434.20

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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.