Home / 13,789,581.72-20,633,983.54-8,112,479.64

Finding the Fourth Proportional to 13,789,581.72, 20,633,983.54 and 8,112,479.64

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Solution

The fourth proportional to 13,789,581.72, 20,633,983.54 and 8,112,479.64 is: 12,139,075.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789,581.72 : 20,633,983.54 = 8,112,479.64 : x
  2. Step 2: Convert to fraction form
    13,789,581.72/20,633,983.54 = 8,112,479.64/x
  3. Step 3: Cross multiply
    13,789,581.72x = 20,633,983.54 × 8,112,479.64
  4. Step 4: Simplify right side
    13,789,581.72x = 167,392,771,360,345.12
  5. Step 5: Solve for x
    x = 167,392,771,360,345.12/13,789,581.72
  6. Step 6: Final answer
    x = 12,139,075.34

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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.