Home / 28,590.15-39,453.93-15,669.30

Finding the Fourth Proportional to 28,590.15, 39,453.93 and 15,669.30

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Solution

The fourth proportional to 28,590.15, 39,453.93 and 15,669.30 is: 21,623.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,590.15 : 39,453.93 = 15,669.30 : x
  2. Step 2: Convert to fraction form
    28,590.15/39,453.93 = 15,669.30/x
  3. Step 3: Cross multiply
    28,590.15x = 39,453.93 × 15,669.30
  4. Step 4: Simplify right side
    28,590.15x = 618,215,465.35
  5. Step 5: Solve for x
    x = 618,215,465.35/28,590.15
  6. Step 6: Final answer
    x = 21,623.37

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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.