Home / 15,927.09-21,980.12-8,853.63

Finding the Fourth Proportional to 15,927.09, 21,980.12 and 8,853.63

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Solution

The fourth proportional to 15,927.09, 21,980.12 and 8,853.63 is: 12,218.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,927.09 : 21,980.12 = 8,853.63 : x
  2. Step 2: Convert to fraction form
    15,927.09/21,980.12 = 8,853.63/x
  3. Step 3: Cross multiply
    15,927.09x = 21,980.12 × 8,853.63
  4. Step 4: Simplify right side
    15,927.09x = 194,603,849.84
  5. Step 5: Solve for x
    x = 194,603,849.84/15,927.09
  6. Step 6: Final answer
    x = 12,218.42

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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.