Home / 21,312.27-29,410.97-11,880.63

Finding the Fourth Proportional to 21,312.27, 29,410.97 and 11,880.63

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Solution

The fourth proportional to 21,312.27, 29,410.97 and 11,880.63 is: 16,395.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.27 : 29,410.97 = 11,880.63 : x
  2. Step 2: Convert to fraction form
    21,312.27/29,410.97 = 11,880.63/x
  3. Step 3: Cross multiply
    21,312.27x = 29,410.97 × 11,880.63
  4. Step 4: Simplify right side
    21,312.27x = 349,420,852.51
  5. Step 5: Solve for x
    x = 349,420,852.51/21,312.27
  6. Step 6: Final answer
    x = 16,395.29

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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.