Home / 28,126.70-38,814.89-15,379.94

Finding the Fourth Proportional to 28,126.70, 38,814.89 and 15,379.94

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Solution

The fourth proportional to 28,126.70, 38,814.89 and 15,379.94 is: 21,224.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.70 : 38,814.89 = 15,379.94 : x
  2. Step 2: Convert to fraction form
    28,126.70/38,814.89 = 15,379.94/x
  3. Step 3: Cross multiply
    28,126.70x = 38,814.89 × 15,379.94
  4. Step 4: Simplify right side
    28,126.70x = 596,970,602.41
  5. Step 5: Solve for x
    x = 596,970,602.41/28,126.70
  6. Step 6: Final answer
    x = 21,224.34

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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.