Home / 21,077.64-29,073.87-13,516.02

Finding the Fourth Proportional to 21,077.64, 29,073.87 and 13,516.02

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Solution

The fourth proportional to 21,077.64, 29,073.87 and 13,516.02 is: 18,643.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.64 : 29,073.87 = 13,516.02 : x
  2. Step 2: Convert to fraction form
    21,077.64/29,073.87 = 13,516.02/x
  3. Step 3: Cross multiply
    21,077.64x = 29,073.87 × 13,516.02
  4. Step 4: Simplify right side
    21,077.64x = 392,963,008.40
  5. Step 5: Solve for x
    x = 392,963,008.40/21,077.64
  6. Step 6: Final answer
    x = 18,643.60

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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.