Home / 21,248.78-29,322.90-11,817.14

Finding the Fourth Proportional to 21,248.78, 29,322.90 and 11,817.14

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Solution

The fourth proportional to 21,248.78, 29,322.90 and 11,817.14 is: 16,307.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.78 : 29,322.90 = 11,817.14 : x
  2. Step 2: Convert to fraction form
    21,248.78/29,322.90 = 11,817.14/x
  3. Step 3: Cross multiply
    21,248.78x = 29,322.90 × 11,817.14
  4. Step 4: Simplify right side
    21,248.78x = 346,512,814.51
  5. Step 5: Solve for x
    x = 346,512,814.51/21,248.78
  6. Step 6: Final answer
    x = 16,307.42

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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.