Home / 21,828.98-30,120.45-12,267.74

Finding the Fourth Proportional to 21,828.98, 30,120.45 and 12,267.74

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Solution

The fourth proportional to 21,828.98, 30,120.45 and 12,267.74 is: 16,927.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.98 : 30,120.45 = 12,267.74 : x
  2. Step 2: Convert to fraction form
    21,828.98/30,120.45 = 12,267.74/x
  3. Step 3: Cross multiply
    21,828.98x = 30,120.45 × 12,267.74
  4. Step 4: Simplify right side
    21,828.98x = 369,509,849.28
  5. Step 5: Solve for x
    x = 369,509,849.28/21,828.98
  6. Step 6: Final answer
    x = 16,927.49

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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.