Home / 19,214.42-28,830.53-8,123.69

Finding the Fourth Proportional to 19,214.42, 28,830.53 and 8,123.69

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Solution

The fourth proportional to 19,214.42, 28,830.53 and 8,123.69 is: 12,189.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,214.42 : 28,830.53 = 8,123.69 : x
  2. Step 2: Convert to fraction form
    19,214.42/28,830.53 = 8,123.69/x
  3. Step 3: Cross multiply
    19,214.42x = 28,830.53 × 8,123.69
  4. Step 4: Simplify right side
    19,214.42x = 234,210,380.64
  5. Step 5: Solve for x
    x = 234,210,380.64/19,214.42
  6. Step 6: Final answer
    x = 12,189.31

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1.5x scale

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.