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Finding the Fourth Proportional to 15,004.70, 20,720.31 and 10,051.10

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Solution

The fourth proportional to 15,004.70, 20,720.31 and 10,051.10 is: 13,879.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.70 : 20,720.31 = 10,051.10 : x
  2. Step 2: Convert to fraction form
    15,004.70/20,720.31 = 10,051.10/x
  3. Step 3: Cross multiply
    15,004.70x = 20,720.31 × 10,051.10
  4. Step 4: Simplify right side
    15,004.70x = 208,261,907.84
  5. Step 5: Solve for x
    x = 208,261,907.84/15,004.70
  6. Step 6: Final answer
    x = 13,879.78

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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.