Home / 13,500,279-18,630,434.42-7,305,325.79

Finding the Fourth Proportional to 13,500,279, 18,630,434.42 and 7,305,325.79

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Solution

The fourth proportional to 13,500,279, 18,630,434.42 and 7,305,325.79 is: 10,081,376.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,500,279 : 18,630,434.42 = 7,305,325.79 : x
  2. Step 2: Convert to fraction form
    13,500,279/18,630,434.42 = 7,305,325.79/x
  3. Step 3: Cross multiply
    13,500,279x = 18,630,434.42 × 7,305,325.79
  4. Step 4: Simplify right side
    13,500,279x = 136,101,392,917,650.89
  5. Step 5: Solve for x
    x = 136,101,392,917,650.89/13,500,279
  6. Step 6: Final answer
    x = 10,081,376.31

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Double scale
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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.