Home / 15,636,697,795.20-21,578,489,654.96-8,499,686,971.28

Finding the Fourth Proportional to 15,636,697,795.20, 21,578,489,654.96 and 8,499,686,971.28

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Solution

The fourth proportional to 15,636,697,795.20, 21,578,489,654.96 and 8,499,686,971.28 is: 11,729,484,689.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,636,697,795.20 : 21,578,489,654.96 = 8,499,686,971.28 : x
  2. Step 2: Convert to fraction form
    15,636,697,795.20/21,578,489,654.96 = 8,499,686,971.28/x
  3. Step 3: Cross multiply
    15,636,697,795.20x = 21,578,489,654.96 × 8,499,686,971.28
  4. Step 4: Simplify right side
    15,636,697,795.20x = 183,410,407,380,163,756,032
  5. Step 5: Solve for x
    x = 183,410,407,380,163,756,032/15,636,697,795.20
  6. Step 6: Final answer
    x = 11,729,484,689.31

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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.