Home / 21,768.75-30,036.02-12,816.63

Finding the Fourth Proportional to 21,768.75, 30,036.02 and 12,816.63

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Solution

The fourth proportional to 21,768.75, 30,036.02 and 12,816.63 is: 17,684.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,768.75 : 30,036.02 = 12,816.63 : x
  2. Step 2: Convert to fraction form
    21,768.75/30,036.02 = 12,816.63/x
  3. Step 3: Cross multiply
    21,768.75x = 30,036.02 × 12,816.63
  4. Step 4: Simplify right side
    21,768.75x = 384,960,490.93
  5. Step 5: Solve for x
    x = 384,960,490.93/21,768.75
  6. Step 6: Final answer
    x = 17,684.09

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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.