Home / 20,120,410.32-27,758,965.32-13,506,628.56

Finding the Fourth Proportional to 20,120,410.32, 27,758,965.32 and 13,506,628.56

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Solution

The fourth proportional to 20,120,410.32, 27,758,965.32 and 13,506,628.56 is: 18,634,313.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120,410.32 : 27,758,965.32 = 13,506,628.56 : x
  2. Step 2: Convert to fraction form
    20,120,410.32/27,758,965.32 = 13,506,628.56/x
  3. Step 3: Cross multiply
    20,120,410.32x = 27,758,965.32 × 13,506,628.56
  4. Step 4: Simplify right side
    20,120,410.32x = 374,930,033,787,161.56
  5. Step 5: Solve for x
    x = 374,930,033,787,161.56/20,120,410.32
  6. Step 6: Final answer
    x = 18,634,313.51

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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.