Home / 18,947,844-26,147,979.36-10,687,878.72

Finding the Fourth Proportional to 18,947,844, 26,147,979.36 and 10,687,878.72

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Solution

The fourth proportional to 18,947,844, 26,147,979.36 and 10,687,878.72 is: 14,749,247.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947,844 : 26,147,979.36 = 10,687,878.72 : x
  2. Step 2: Convert to fraction form
    18,947,844/26,147,979.36 = 10,687,878.72/x
  3. Step 3: Cross multiply
    18,947,844x = 26,147,979.36 × 10,687,878.72
  4. Step 4: Simplify right side
    18,947,844x = 279,466,432,172,743.22
  5. Step 5: Solve for x
    x = 279,466,432,172,743.22/18,947,844
  6. Step 6: Final answer
    x = 14,749,247.05

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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.