Home / 28,667.03-39,559.16-15,921.04

Finding the Fourth Proportional to 28,667.03, 39,559.16 and 15,921.04

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Solution

The fourth proportional to 28,667.03, 39,559.16 and 15,921.04 is: 21,970.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,667.03 : 39,559.16 = 15,921.04 : x
  2. Step 2: Convert to fraction form
    28,667.03/39,559.16 = 15,921.04/x
  3. Step 3: Cross multiply
    28,667.03x = 39,559.16 × 15,921.04
  4. Step 4: Simplify right side
    28,667.03x = 629,822,909.63
  5. Step 5: Solve for x
    x = 629,822,909.63/28,667.03
  6. Step 6: Final answer
    x = 21,970.29

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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.