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Finding the Fourth Proportional to 12,039.32, 18,053.24 and 7,043.12

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Solution

The fourth proportional to 12,039.32, 18,053.24 and 7,043.12 is: 10,561.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,039.32 : 18,053.24 = 7,043.12 : x
  2. Step 2: Convert to fraction form
    12,039.32/18,053.24 = 7,043.12/x
  3. Step 3: Cross multiply
    12,039.32x = 18,053.24 × 7,043.12
  4. Step 4: Simplify right side
    12,039.32x = 127,151,135.71
  5. Step 5: Solve for x
    x = 127,151,135.71/12,039.32
  6. Step 6: Final answer
    x = 10,561.32

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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.