Home / 19,878.32-27,431.98-10,926

Finding the Fourth Proportional to 19,878.32, 27,431.98 and 10,926

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Solution

The fourth proportional to 19,878.32, 27,431.98 and 10,926 is: 15,077.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.32 : 27,431.98 = 10,926 : x
  2. Step 2: Convert to fraction form
    19,878.32/27,431.98 = 10,926/x
  3. Step 3: Cross multiply
    19,878.32x = 27,431.98 × 10,926
  4. Step 4: Simplify right side
    19,878.32x = 299,721,813.48
  5. Step 5: Solve for x
    x = 299,721,813.48/19,878.32
  6. Step 6: Final answer
    x = 15,077.82

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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.