Home / 19,212,143.12-28,772,037.53-10,989,856.97

Finding the Fourth Proportional to 19,212,143.12, 28,772,037.53 and 10,989,856.97

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Solution

The fourth proportional to 19,212,143.12, 28,772,037.53 and 10,989,856.97 is: 16,458,370.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,212,143.12 : 28,772,037.53 = 10,989,856.97 : x
  2. Step 2: Convert to fraction form
    19,212,143.12/28,772,037.53 = 10,989,856.97/x
  3. Step 3: Cross multiply
    19,212,143.12x = 28,772,037.53 × 10,989,856.97
  4. Step 4: Simplify right side
    19,212,143.12x = 316,200,577,135,222.81
  5. Step 5: Solve for x
    x = 316,200,577,135,222.81/19,212,143.12
  6. Step 6: Final answer
    x = 16,458,370.89

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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.