Home / 28,667.40-42,968.08-11,122.39

Finding the Fourth Proportional to 28,667.40, 42,968.08 and 11,122.39

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Solution

The fourth proportional to 28,667.40, 42,968.08 and 11,122.39 is: 16,670.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,667.40 : 42,968.08 = 11,122.39 : x
  2. Step 2: Convert to fraction form
    28,667.40/42,968.08 = 11,122.39/x
  3. Step 3: Cross multiply
    28,667.40x = 42,968.08 × 11,122.39
  4. Step 4: Simplify right side
    28,667.40x = 477,907,743.31
  5. Step 5: Solve for x
    x = 477,907,743.31/28,667.40
  6. Step 6: Final answer
    x = 16,670.77

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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.