Home / 21,242.53-29,315.03-11,682.84

Finding the Fourth Proportional to 21,242.53, 29,315.03 and 11,682.84

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Solution

The fourth proportional to 21,242.53, 29,315.03 and 11,682.84 is: 16,122.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.53 : 29,315.03 = 11,682.84 : x
  2. Step 2: Convert to fraction form
    21,242.53/29,315.03 = 11,682.84/x
  3. Step 3: Cross multiply
    21,242.53x = 29,315.03 × 11,682.84
  4. Step 4: Simplify right side
    21,242.53x = 342,482,658.51
  5. Step 5: Solve for x
    x = 342,482,658.51/21,242.53
  6. Step 6: Final answer
    x = 16,122.50

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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.