Home / 18,531,719.16-27,781,132.50-7,009,125.72

Finding the Fourth Proportional to 18,531,719.16, 27,781,132.50 and 7,009,125.72

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Solution

The fourth proportional to 18,531,719.16, 27,781,132.50 and 7,009,125.72 is: 10,507,468.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531,719.16 : 27,781,132.50 = 7,009,125.72 : x
  2. Step 2: Convert to fraction form
    18,531,719.16/27,781,132.50 = 7,009,125.72/x
  3. Step 3: Cross multiply
    18,531,719.16x = 27,781,132.50 × 7,009,125.72
  4. Step 4: Simplify right side
    18,531,719.16x = 194,721,450,336,477.91
  5. Step 5: Solve for x
    x = 194,721,450,336,477.91/18,531,719.16
  6. Step 6: Final answer
    x = 10,507,468.23

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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.