Home / 21,081,948,749.78-31,621,809,384.77-6,915,048,386.39

Finding the Fourth Proportional to 21,081,948,749.78, 31,621,809,384.77 and 6,915,048,386.39

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Solution

The fourth proportional to 21,081,948,749.78, 31,621,809,384.77 and 6,915,048,386.39 is: 10,372,207,263.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081,948,749.78 : 31,621,809,384.77 = 6,915,048,386.39 : x
  2. Step 2: Convert to fraction form
    21,081,948,749.78/31,621,809,384.77 = 6,915,048,386.39/x
  3. Step 3: Cross multiply
    21,081,948,749.78x = 31,621,809,384.77 × 6,915,048,386.39
  4. Step 4: Simplify right side
    21,081,948,749.78x = 218,666,341,960,813,412,352
  5. Step 5: Solve for x
    x = 218,666,341,960,813,412,352/21,081,948,749.78
  6. Step 6: Final answer
    x = 10,372,207,263.96

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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.