Home / 21,294.36-29,386.53-12,342.54

Finding the Fourth Proportional to 21,294.36, 29,386.53 and 12,342.54

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Solution

The fourth proportional to 21,294.36, 29,386.53 and 12,342.54 is: 17,032.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.36 : 29,386.53 = 12,342.54 : x
  2. Step 2: Convert to fraction form
    21,294.36/29,386.53 = 12,342.54/x
  3. Step 3: Cross multiply
    21,294.36x = 29,386.53 × 12,342.54
  4. Step 4: Simplify right side
    21,294.36x = 362,704,421.99
  5. Step 5: Solve for x
    x = 362,704,421.99/21,294.36
  6. Step 6: Final answer
    x = 17,032.89

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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.