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Finding the Fourth Proportional to 13,048.88, 18,007.32 and 7,080.56

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Solution

The fourth proportional to 13,048.88, 18,007.32 and 7,080.56 is: 9,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,048.88 : 18,007.32 = 7,080.56 : x
  2. Step 2: Convert to fraction form
    13,048.88/18,007.32 = 7,080.56/x
  3. Step 3: Cross multiply
    13,048.88x = 18,007.32 × 7,080.56
  4. Step 4: Simplify right side
    13,048.88x = 127,501,909.70
  5. Step 5: Solve for x
    x = 127,501,909.70/13,048.88
  6. Step 6: Final answer
    x = 9,771.10

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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.