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Finding the Fourth Proportional to 13,005.74, 17,947.90 and 7,341.68

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Solution

The fourth proportional to 13,005.74, 17,947.90 and 7,341.68 is: 10,131.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,005.74 : 17,947.90 = 7,341.68 : x
  2. Step 2: Convert to fraction form
    13,005.74/17,947.90 = 7,341.68/x
  3. Step 3: Cross multiply
    13,005.74x = 17,947.90 × 7,341.68
  4. Step 4: Simplify right side
    13,005.74x = 131,767,738.47
  5. Step 5: Solve for x
    x = 131,767,738.47/13,005.74
  6. Step 6: Final answer
    x = 10,131.51

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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.