Home / 21,562.94-29,756.81-12,131.51

Finding the Fourth Proportional to 21,562.94, 29,756.81 and 12,131.51

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Solution

The fourth proportional to 21,562.94, 29,756.81 and 12,131.51 is: 16,741.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,562.94 : 29,756.81 = 12,131.51 : x
  2. Step 2: Convert to fraction form
    21,562.94/29,756.81 = 12,131.51/x
  3. Step 3: Cross multiply
    21,562.94x = 29,756.81 × 12,131.51
  4. Step 4: Simplify right side
    21,562.94x = 360,994,919.63
  5. Step 5: Solve for x
    x = 360,994,919.63/21,562.94
  6. Step 6: Final answer
    x = 16,741.45

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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.