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Finding the Fourth Proportional to 26,556.50, 36,649.72 and 15,378.50

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Solution

The fourth proportional to 26,556.50, 36,649.72 and 15,378.50 is: 21,223.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,556.50 : 36,649.72 = 15,378.50 : x
  2. Step 2: Convert to fraction form
    26,556.50/36,649.72 = 15,378.50/x
  3. Step 3: Cross multiply
    26,556.50x = 36,649.72 × 15,378.50
  4. Step 4: Simplify right side
    26,556.50x = 563,617,719.02
  5. Step 5: Solve for x
    x = 563,617,719.02/26,556.50
  6. Step 6: Final answer
    x = 21,223.34

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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.