Home / 21,121,213,000.10-31,681,819,500.15-10,636,378,081.70

Finding the Fourth Proportional to 21,121,213,000.10, 31,681,819,500.15 and 10,636,378,081.70

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Solution

The fourth proportional to 21,121,213,000.10, 31,681,819,500.15 and 10,636,378,081.70 is: 15,954,567,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121,213,000.10 : 31,681,819,500.15 = 10,636,378,081.70 : x
  2. Step 2: Convert to fraction form
    21,121,213,000.10/31,681,819,500.15 = 10,636,378,081.70/x
  3. Step 3: Cross multiply
    21,121,213,000.10x = 31,681,819,500.15 × 10,636,378,081.70
  4. Step 4: Simplify right side
    21,121,213,000.10x = 336,979,810,519,771,119,616
  5. Step 5: Solve for x
    x = 336,979,810,519,771,119,616/21,121,213,000.10
  6. Step 6: Final answer
    x = 15,954,567,122.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.