Home / 21,307.53-29,405.39-11,876.16

Finding the Fourth Proportional to 21,307.53, 29,405.39 and 11,876.16

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Solution

The fourth proportional to 21,307.53, 29,405.39 and 11,876.16 is: 16,389.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.53 : 29,405.39 = 11,876.16 : x
  2. Step 2: Convert to fraction form
    21,307.53/29,405.39 = 11,876.16/x
  3. Step 3: Cross multiply
    21,307.53x = 29,405.39 × 11,876.16
  4. Step 4: Simplify right side
    21,307.53x = 349,223,146.19
  5. Step 5: Solve for x
    x = 349,223,146.19/21,307.53
  6. Step 6: Final answer
    x = 16,389.66

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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.