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Finding the Fourth Proportional to 12,842,987.02, 17,724,118.35 and 7,119,851.02

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Solution

The fourth proportional to 12,842,987.02, 17,724,118.35 and 7,119,851.02 is: 9,825,835.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,842,987.02 : 17,724,118.35 = 7,119,851.02 : x
  2. Step 2: Convert to fraction form
    12,842,987.02/17,724,118.35 = 7,119,851.02/x
  3. Step 3: Cross multiply
    12,842,987.02x = 17,724,118.35 × 7,119,851.02
  4. Step 4: Simplify right side
    12,842,987.02x = 126,193,082,112,848.22
  5. Step 5: Solve for x
    x = 126,193,082,112,848.22/12,842,987.02
  6. Step 6: Final answer
    x = 9,825,835.84

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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.