Home / 19,128.70-28,700.64-8,595.86

Finding the Fourth Proportional to 19,128.70, 28,700.64 and 8,595.86

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Solution

The fourth proportional to 19,128.70, 28,700.64 and 8,595.86 is: 12,897.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.70 : 28,700.64 = 8,595.86 : x
  2. Step 2: Convert to fraction form
    19,128.70/28,700.64 = 8,595.86/x
  3. Step 3: Cross multiply
    19,128.70x = 28,700.64 × 8,595.86
  4. Step 4: Simplify right side
    19,128.70x = 246,706,755.10
  5. Step 5: Solve for x
    x = 246,706,755.10/19,128.70
  6. Step 6: Final answer
    x = 12,897.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.