Home / 21,294.36-29,386.80-11,863.53

Finding the Fourth Proportional to 21,294.36, 29,386.80 and 11,863.53

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Solution

The fourth proportional to 21,294.36, 29,386.80 and 11,863.53 is: 16,372.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.36 : 29,386.80 = 11,863.53 : x
  2. Step 2: Convert to fraction form
    21,294.36/29,386.80 = 11,863.53/x
  3. Step 3: Cross multiply
    21,294.36x = 29,386.80 × 11,863.53
  4. Step 4: Simplify right side
    21,294.36x = 348,631,183.40
  5. Step 5: Solve for x
    x = 348,631,183.40/21,294.36
  6. Step 6: Final answer
    x = 16,372.00

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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.