Home / 21,395.63-29,525.80-11,964.20

Finding the Fourth Proportional to 21,395.63, 29,525.80 and 11,964.20

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Solution

The fourth proportional to 21,395.63, 29,525.80 and 11,964.20 is: 16,510.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,395.63 : 29,525.80 = 11,964.20 : x
  2. Step 2: Convert to fraction form
    21,395.63/29,525.80 = 11,964.20/x
  3. Step 3: Cross multiply
    21,395.63x = 29,525.80 × 11,964.20
  4. Step 4: Simplify right side
    21,395.63x = 353,252,495.55
  5. Step 5: Solve for x
    x = 353,252,495.55/21,395.63
  6. Step 6: Final answer
    x = 16,510.49

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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.