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Finding the Fourth Proportional to 26,840.90, 37,041.72 and 15,511.90

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Solution

The fourth proportional to 26,840.90, 37,041.72 and 15,511.90 is: 21,407.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,840.90 : 37,041.72 = 15,511.90 : x
  2. Step 2: Convert to fraction form
    26,840.90/37,041.72 = 15,511.90/x
  3. Step 3: Cross multiply
    26,840.90x = 37,041.72 × 15,511.90
  4. Step 4: Simplify right side
    26,840.90x = 574,587,456.47
  5. Step 5: Solve for x
    x = 574,587,456.47/26,840.90
  6. Step 6: Final answer
    x = 21,407.16

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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.