Home / 21,303.36-29,397.96-13,349.88

Finding the Fourth Proportional to 21,303.36, 29,397.96 and 13,349.88

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Solution

The fourth proportional to 21,303.36, 29,397.96 and 13,349.88 is: 18,422.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.36 : 29,397.96 = 13,349.88 : x
  2. Step 2: Convert to fraction form
    21,303.36/29,397.96 = 13,349.88/x
  3. Step 3: Cross multiply
    21,303.36x = 29,397.96 × 13,349.88
  4. Step 4: Simplify right side
    21,303.36x = 392,459,238.24
  5. Step 5: Solve for x
    x = 392,459,238.24/21,303.36
  6. Step 6: Final answer
    x = 18,422.41

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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.