Home / 20,723,429.16-28,598,531.72-11,431,390.87

Finding the Fourth Proportional to 20,723,429.16, 28,598,531.72 and 11,431,390.87

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Solution

The fourth proportional to 20,723,429.16, 28,598,531.72 and 11,431,390.87 is: 15,775,429.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723,429.16 : 28,598,531.72 = 11,431,390.87 : x
  2. Step 2: Convert to fraction form
    20,723,429.16/28,598,531.72 = 11,431,390.87/x
  3. Step 3: Cross multiply
    20,723,429.16x = 28,598,531.72 × 11,431,390.87
  4. Step 4: Simplify right side
    20,723,429.16x = 326,920,994,234,222.94
  5. Step 5: Solve for x
    x = 326,920,994,234,222.94/20,723,429.16
  6. Step 6: Final answer
    x = 15,775,429.43

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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.