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Finding the Fourth Proportional to 18,181,484.79, 25,090,978.91 and 9,922,079.08

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Solution

The fourth proportional to 18,181,484.79, 25,090,978.91 and 9,922,079.08 is: 13,692,758.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,181,484.79 : 25,090,978.91 = 9,922,079.08 : x
  2. Step 2: Convert to fraction form
    18,181,484.79/25,090,978.91 = 9,922,079.08/x
  3. Step 3: Cross multiply
    18,181,484.79x = 25,090,978.91 × 9,922,079.08
  4. Step 4: Simplify right side
    18,181,484.79x = 248,954,676,764,566.91
  5. Step 5: Solve for x
    x = 248,954,676,764,566.91/18,181,484.79
  6. Step 6: Final answer
    x = 13,692,758.30

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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.