Home / 30,079.72-45,105.54-11,345.32

Finding the Fourth Proportional to 30,079.72, 45,105.54 and 11,345.32

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Solution

The fourth proportional to 30,079.72, 45,105.54 and 11,345.32 is: 17,012.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,079.72 : 45,105.54 = 11,345.32 : x
  2. Step 2: Convert to fraction form
    30,079.72/45,105.54 = 11,345.32/x
  3. Step 3: Cross multiply
    30,079.72x = 45,105.54 × 11,345.32
  4. Step 4: Simplify right side
    30,079.72x = 511,736,785.07
  5. Step 5: Solve for x
    x = 511,736,785.07/30,079.72
  6. Step 6: Final answer
    x = 17,012.68

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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.