Home / 21,312.94-29,412.24-11,880.48

Finding the Fourth Proportional to 21,312.94, 29,412.24 and 11,880.48

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Solution

The fourth proportional to 21,312.94, 29,412.24 and 11,880.48 is: 16,395.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.94 : 29,412.24 = 11,880.48 : x
  2. Step 2: Convert to fraction form
    21,312.94/29,412.24 = 11,880.48/x
  3. Step 3: Cross multiply
    21,312.94x = 29,412.24 × 11,880.48
  4. Step 4: Simplify right side
    21,312.94x = 349,431,529.08
  5. Step 5: Solve for x
    x = 349,431,529.08/21,312.94
  6. Step 6: Final answer
    x = 16,395.28

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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.