Home / 21,258.64-29,329-13,297.84

Finding the Fourth Proportional to 21,258.64, 29,329 and 13,297.84

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Solution

The fourth proportional to 21,258.64, 29,329 and 13,297.84 is: 18,346.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.64 : 29,329 = 13,297.84 : x
  2. Step 2: Convert to fraction form
    21,258.64/29,329 = 13,297.84/x
  3. Step 3: Cross multiply
    21,258.64x = 29,329 × 13,297.84
  4. Step 4: Simplify right side
    21,258.64x = 390,012,349.36
  5. Step 5: Solve for x
    x = 390,012,349.36/21,258.64
  6. Step 6: Final answer
    x = 18,346.06

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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.