Home / 26,731.36-40,070.64-12,890.08

Finding the Fourth Proportional to 26,731.36, 40,070.64 and 12,890.08

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Solution

The fourth proportional to 26,731.36, 40,070.64 and 12,890.08 is: 19,322.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,731.36 : 40,070.64 = 12,890.08 : x
  2. Step 2: Convert to fraction form
    26,731.36/40,070.64 = 12,890.08/x
  3. Step 3: Cross multiply
    26,731.36x = 40,070.64 × 12,890.08
  4. Step 4: Simplify right side
    26,731.36x = 516,513,755.25
  5. Step 5: Solve for x
    x = 516,513,755.25/26,731.36
  6. Step 6: Final answer
    x = 19,322.39

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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.