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Finding the Fourth Proportional to 26,750.94, 36,915.48 and 15,420.48

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Solution

The fourth proportional to 26,750.94, 36,915.48 and 15,420.48 is: 21,279.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,750.94 : 36,915.48 = 15,420.48 : x
  2. Step 2: Convert to fraction form
    26,750.94/36,915.48 = 15,420.48/x
  3. Step 3: Cross multiply
    26,750.94x = 36,915.48 × 15,420.48
  4. Step 4: Simplify right side
    26,750.94x = 569,254,421.03
  5. Step 5: Solve for x
    x = 569,254,421.03/26,750.94
  6. Step 6: Final answer
    x = 21,279.79

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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.