Home / 20,575.22-28,393.56-12,075.81

Finding the Fourth Proportional to 20,575.22, 28,393.56 and 12,075.81

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Solution

The fourth proportional to 20,575.22, 28,393.56 and 12,075.81 is: 16,664.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575.22 : 28,393.56 = 12,075.81 : x
  2. Step 2: Convert to fraction form
    20,575.22/28,393.56 = 12,075.81/x
  3. Step 3: Cross multiply
    20,575.22x = 28,393.56 × 12,075.81
  4. Step 4: Simplify right side
    20,575.22x = 342,875,235.78
  5. Step 5: Solve for x
    x = 342,875,235.78/20,575.22
  6. Step 6: Final answer
    x = 16,664.48

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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.