Home / 18,774,114.68-28,173,018.47-7,991,398.32

Finding the Fourth Proportional to 18,774,114.68, 28,173,018.47 and 7,991,398.32

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Solution

The fourth proportional to 18,774,114.68, 28,173,018.47 and 7,991,398.32 is: 11,992,140.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774,114.68 : 28,173,018.47 = 7,991,398.32 : x
  2. Step 2: Convert to fraction form
    18,774,114.68/28,173,018.47 = 7,991,398.32/x
  3. Step 3: Cross multiply
    18,774,114.68x = 28,173,018.47 × 7,991,398.32
  4. Step 4: Simplify right side
    18,774,114.68x = 225,141,812,430,530
  5. Step 5: Solve for x
    x = 225,141,812,430,530/18,774,114.68
  6. Step 6: Final answer
    x = 11,992,140.05

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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.