Home / 21,745.74-30,009.51-12,316.26

Finding the Fourth Proportional to 21,745.74, 30,009.51 and 12,316.26

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Solution

The fourth proportional to 21,745.74, 30,009.51 and 12,316.26 is: 16,996.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,745.74 : 30,009.51 = 12,316.26 : x
  2. Step 2: Convert to fraction form
    21,745.74/30,009.51 = 12,316.26/x
  3. Step 3: Cross multiply
    21,745.74x = 30,009.51 × 12,316.26
  4. Step 4: Simplify right side
    21,745.74x = 369,604,927.63
  5. Step 5: Solve for x
    x = 369,604,927.63/21,745.74
  6. Step 6: Final answer
    x = 16,996.66

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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.