Home / 15,664,670.97-21,617,618.34-8,789,661.51

Finding the Fourth Proportional to 15,664,670.97, 21,617,618.34 and 8,789,661.51

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Solution

The fourth proportional to 15,664,670.97, 21,617,618.34 and 8,789,661.51 is: 12,129,941.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664,670.97 : 21,617,618.34 = 8,789,661.51 : x
  2. Step 2: Convert to fraction form
    15,664,670.97/21,617,618.34 = 8,789,661.51/x
  3. Step 3: Cross multiply
    15,664,670.97x = 21,617,618.34 × 8,789,661.51
  4. Step 4: Simplify right side
    15,664,670.97x = 190,011,547,860,968.09
  5. Step 5: Solve for x
    x = 190,011,547,860,968.09/15,664,670.97
  6. Step 6: Final answer
    x = 12,129,941.84

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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.