Home / 20,876,408,665.62-28,810,392,631.16-12,303,197,129.90

Finding the Fourth Proportional to 20,876,408,665.62, 28,810,392,631.16 and 12,303,197,129.90

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Solution

The fourth proportional to 20,876,408,665.62, 28,810,392,631.16 and 12,303,197,129.90 is: 16,978,971,125.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876,408,665.62 : 28,810,392,631.16 = 12,303,197,129.90 : x
  2. Step 2: Convert to fraction form
    20,876,408,665.62/28,810,392,631.16 = 12,303,197,129.90/x
  3. Step 3: Cross multiply
    20,876,408,665.62x = 28,810,392,631.16 × 12,303,197,129.90
  4. Step 4: Simplify right side
    20,876,408,665.62x = 354,459,939,930,774,241,280
  5. Step 5: Solve for x
    x = 354,459,939,930,774,241,280/20,876,408,665.62
  6. Step 6: Final answer
    x = 16,978,971,125.17

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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.