Home / 28,876.56-39,837.60-19,428.72

Finding the Fourth Proportional to 28,876.56, 39,837.60 and 19,428.72

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Solution

The fourth proportional to 28,876.56, 39,837.60 and 19,428.72 is: 26,803.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,876.56 : 39,837.60 = 19,428.72 : x
  2. Step 2: Convert to fraction form
    28,876.56/39,837.60 = 19,428.72/x
  3. Step 3: Cross multiply
    28,876.56x = 39,837.60 × 19,428.72
  4. Step 4: Simplify right side
    28,876.56x = 773,993,575.87
  5. Step 5: Solve for x
    x = 773,993,575.87/28,876.56
  6. Step 6: Final answer
    x = 26,803.52

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1.5x scale

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.