Home / 20,678.98-28,538.48-11,727.26

Finding the Fourth Proportional to 20,678.98, 28,538.48 and 11,727.26

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Solution

The fourth proportional to 20,678.98, 28,538.48 and 11,727.26 is: 16,184.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.98 : 28,538.48 = 11,727.26 : x
  2. Step 2: Convert to fraction form
    20,678.98/28,538.48 = 11,727.26/x
  3. Step 3: Cross multiply
    20,678.98x = 28,538.48 × 11,727.26
  4. Step 4: Simplify right side
    20,678.98x = 334,678,187.67
  5. Step 5: Solve for x
    x = 334,678,187.67/20,678.98
  6. Step 6: Final answer
    x = 16,184.47

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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.