Home / 21,973.35-30,325.09-12,415

Finding the Fourth Proportional to 21,973.35, 30,325.09 and 12,415

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Solution

The fourth proportional to 21,973.35, 30,325.09 and 12,415 is: 17,133.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,973.35 : 30,325.09 = 12,415 : x
  2. Step 2: Convert to fraction form
    21,973.35/30,325.09 = 12,415/x
  3. Step 3: Cross multiply
    21,973.35x = 30,325.09 × 12,415
  4. Step 4: Simplify right side
    21,973.35x = 376,485,992.35
  5. Step 5: Solve for x
    x = 376,485,992.35/21,973.35
  6. Step 6: Final answer
    x = 17,133.75

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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.