Home / 14,789.61-20,409.35-8,075.43

Finding the Fourth Proportional to 14,789.61, 20,409.35 and 8,075.43

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Solution

The fourth proportional to 14,789.61, 20,409.35 and 8,075.43 is: 11,143.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,789.61 : 20,409.35 = 8,075.43 : x
  2. Step 2: Convert to fraction form
    14,789.61/20,409.35 = 8,075.43/x
  3. Step 3: Cross multiply
    14,789.61x = 20,409.35 × 8,075.43
  4. Step 4: Simplify right side
    14,789.61x = 164,814,236.89
  5. Step 5: Solve for x
    x = 164,814,236.89/14,789.61
  6. Step 6: Final answer
    x = 11,143.92

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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.