Home / 21,434.07-29,580.07-12,936.06

Finding the Fourth Proportional to 21,434.07, 29,580.07 and 12,936.06

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Solution

The fourth proportional to 21,434.07, 29,580.07 and 12,936.06 is: 17,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,434.07 : 29,580.07 = 12,936.06 : x
  2. Step 2: Convert to fraction form
    21,434.07/29,580.07 = 12,936.06/x
  3. Step 3: Cross multiply
    21,434.07x = 29,580.07 × 12,936.06
  4. Step 4: Simplify right side
    21,434.07x = 382,649,560.32
  5. Step 5: Solve for x
    x = 382,649,560.32/21,434.07
  6. Step 6: Final answer
    x = 17,852.40

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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.