Home / 21,005,176.32-28,986,739.20-11,837,635.20

Finding the Fourth Proportional to 21,005,176.32, 28,986,739.20 and 11,837,635.20

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Solution

The fourth proportional to 21,005,176.32, 28,986,739.20 and 11,837,635.20 is: 16,335,708.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005,176.32 : 28,986,739.20 = 11,837,635.20 : x
  2. Step 2: Convert to fraction form
    21,005,176.32/28,986,739.20 = 11,837,635.20/x
  3. Step 3: Cross multiply
    21,005,176.32x = 28,986,739.20 × 11,837,635.20
  4. Step 4: Simplify right side
    21,005,176.32x = 343,134,444,287,139.81
  5. Step 5: Solve for x
    x = 343,134,444,287,139.81/21,005,176.32
  6. Step 6: Final answer
    x = 16,335,708.83

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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.