Home / 21,535.19-29,716.70-12,459.03

Finding the Fourth Proportional to 21,535.19, 29,716.70 and 12,459.03

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Solution

The fourth proportional to 21,535.19, 29,716.70 and 12,459.03 is: 17,192.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,535.19 : 29,716.70 = 12,459.03 : x
  2. Step 2: Convert to fraction form
    21,535.19/29,716.70 = 12,459.03/x
  3. Step 3: Cross multiply
    21,535.19x = 29,716.70 × 12,459.03
  4. Step 4: Simplify right side
    21,535.19x = 370,241,194.51
  5. Step 5: Solve for x
    x = 370,241,194.51/21,535.19
  6. Step 6: Final answer
    x = 17,192.39

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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.