Home / 21,395.30-29,526.48-11,963.84

Finding the Fourth Proportional to 21,395.30, 29,526.48 and 11,963.84

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Solution

The fourth proportional to 21,395.30, 29,526.48 and 11,963.84 is: 16,510.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,395.30 : 29,526.48 = 11,963.84 : x
  2. Step 2: Convert to fraction form
    21,395.30/29,526.48 = 11,963.84/x
  3. Step 3: Cross multiply
    21,395.30x = 29,526.48 × 11,963.84
  4. Step 4: Simplify right side
    21,395.30x = 353,249,934.85
  5. Step 5: Solve for x
    x = 353,249,934.85/21,395.30
  6. Step 6: Final answer
    x = 16,510.64

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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.