Home / 15,138,950.88-20,888,633.52-8,699,178.72

Finding the Fourth Proportional to 15,138,950.88, 20,888,633.52 and 8,699,178.72

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Solution

The fourth proportional to 15,138,950.88, 20,888,633.52 and 8,699,178.72 is: 12,003,074.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138,950.88 : 20,888,633.52 = 8,699,178.72 : x
  2. Step 2: Convert to fraction form
    15,138,950.88/20,888,633.52 = 8,699,178.72/x
  3. Step 3: Cross multiply
    15,138,950.88x = 20,888,633.52 × 8,699,178.72
  4. Step 4: Simplify right side
    15,138,950.88x = 181,713,956,207,062.72
  5. Step 5: Solve for x
    x = 181,713,956,207,062.72/15,138,950.88
  6. Step 6: Final answer
    x = 12,003,074.56

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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.