Home / 21,386.55-29,513.63-11,827.08

Finding the Fourth Proportional to 21,386.55, 29,513.63 and 11,827.08

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Solution

The fourth proportional to 21,386.55, 29,513.63 and 11,827.08 is: 16,321.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,386.55 : 29,513.63 = 11,827.08 : x
  2. Step 2: Convert to fraction form
    21,386.55/29,513.63 = 11,827.08/x
  3. Step 3: Cross multiply
    21,386.55x = 29,513.63 × 11,827.08
  4. Step 4: Simplify right side
    21,386.55x = 349,059,992.98
  5. Step 5: Solve for x
    x = 349,059,992.98/21,386.55
  6. Step 6: Final answer
    x = 16,321.47

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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.