Home / 13,121,235.45-18,107,312.64-7,320,017.22

Finding the Fourth Proportional to 13,121,235.45, 18,107,312.64 and 7,320,017.22

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Solution

The fourth proportional to 13,121,235.45, 18,107,312.64 and 7,320,017.22 is: 10,101,628.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,235.45 : 18,107,312.64 = 7,320,017.22 : x
  2. Step 2: Convert to fraction form
    13,121,235.45/18,107,312.64 = 7,320,017.22/x
  3. Step 3: Cross multiply
    13,121,235.45x = 18,107,312.64 × 7,320,017.22
  4. Step 4: Simplify right side
    13,121,235.45x = 132,545,840,332,723.66
  5. Step 5: Solve for x
    x = 132,545,840,332,723.66/13,121,235.45
  6. Step 6: Final answer
    x = 10,101,628.07

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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.