Home / 21,064.40-29,073.48-13,109.84

Finding the Fourth Proportional to 21,064.40, 29,073.48 and 13,109.84

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Solution

The fourth proportional to 21,064.40, 29,073.48 and 13,109.84 is: 18,094.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,064.40 : 29,073.48 = 13,109.84 : x
  2. Step 2: Convert to fraction form
    21,064.40/29,073.48 = 13,109.84/x
  3. Step 3: Cross multiply
    21,064.40x = 29,073.48 × 13,109.84
  4. Step 4: Simplify right side
    21,064.40x = 381,148,671.04
  5. Step 5: Solve for x
    x = 381,148,671.04/21,064.40
  6. Step 6: Final answer
    x = 18,094.45

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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.