Home / 21,419.91-29,531.93-13,852.89

Finding the Fourth Proportional to 21,419.91, 29,531.93 and 13,852.89

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Solution

The fourth proportional to 21,419.91, 29,531.93 and 13,852.89 is: 19,099.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.91 : 29,531.93 = 13,852.89 : x
  2. Step 2: Convert to fraction form
    21,419.91/29,531.93 = 13,852.89/x
  3. Step 3: Cross multiply
    21,419.91x = 29,531.93 × 13,852.89
  4. Step 4: Simplify right side
    21,419.91x = 409,102,508.51
  5. Step 5: Solve for x
    x = 409,102,508.51/21,419.91
  6. Step 6: Final answer
    x = 19,099.17

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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.