Home / 15,636,697,802.20-21,578,489,664.62-8,499,686,978.28

Finding the Fourth Proportional to 15,636,697,802.20, 21,578,489,664.62 and 8,499,686,978.28

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Solution

The fourth proportional to 15,636,697,802.20, 21,578,489,664.62 and 8,499,686,978.28 is: 11,729,484,698.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,636,697,802.20 : 21,578,489,664.62 = 8,499,686,978.28 : x
  2. Step 2: Convert to fraction form
    15,636,697,802.20/21,578,489,664.62 = 8,499,686,978.28/x
  3. Step 3: Cross multiply
    15,636,697,802.20x = 21,578,489,664.62 × 8,499,686,978.28
  4. Step 4: Simplify right side
    15,636,697,802.20x = 183,410,407,613,320,167,424
  5. Step 5: Solve for x
    x = 183,410,407,613,320,167,424/15,636,697,802.20
  6. Step 6: Final answer
    x = 11,729,484,698.97

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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.