Home / 28,667.59-39,559.95-15,921.58

Finding the Fourth Proportional to 28,667.59, 39,559.95 and 15,921.58

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Solution

The fourth proportional to 28,667.59, 39,559.95 and 15,921.58 is: 21,971.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,667.59 : 39,559.95 = 15,921.58 : x
  2. Step 2: Convert to fraction form
    28,667.59/39,559.95 = 15,921.58/x
  3. Step 3: Cross multiply
    28,667.59x = 39,559.95 × 15,921.58
  4. Step 4: Simplify right side
    28,667.59x = 629,857,029.01
  5. Step 5: Solve for x
    x = 629,857,029.01/28,667.59
  6. Step 6: Final answer
    x = 21,971.05

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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.