Home / 12,456,005.40-18,684,008.10-11,339,979.30

Finding the Fourth Proportional to 12,456,005.40, 18,684,008.10 and 11,339,979.30

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Solution

The fourth proportional to 12,456,005.40, 18,684,008.10 and 11,339,979.30 is: 17,009,968.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,005.40 : 18,684,008.10 = 11,339,979.30 : x
  2. Step 2: Convert to fraction form
    12,456,005.40/18,684,008.10 = 11,339,979.30/x
  3. Step 3: Cross multiply
    12,456,005.40x = 18,684,008.10 × 11,339,979.30
  4. Step 4: Simplify right side
    12,456,005.40x = 211,876,265,095,032.38
  5. Step 5: Solve for x
    x = 211,876,265,095,032.38/12,456,005.40
  6. Step 6: Final answer
    x = 17,009,968.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.