Home / 15,372.05-21,224.79-9,411.84

Finding the Fourth Proportional to 15,372.05, 21,224.79 and 9,411.84

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Solution

The fourth proportional to 15,372.05, 21,224.79 and 9,411.84 is: 12,995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,372.05 : 21,224.79 = 9,411.84 : x
  2. Step 2: Convert to fraction form
    15,372.05/21,224.79 = 9,411.84/x
  3. Step 3: Cross multiply
    15,372.05x = 21,224.79 × 9,411.84
  4. Step 4: Simplify right side
    15,372.05x = 199,764,327.51
  5. Step 5: Solve for x
    x = 199,764,327.51/15,372.05
  6. Step 6: Final answer
    x = 12,995.30

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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.