Home / 14,789.64-20,409.12-8,075.55

Finding the Fourth Proportional to 14,789.64, 20,409.12 and 8,075.55

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Solution

The fourth proportional to 14,789.64, 20,409.12 and 8,075.55 is: 11,143.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,789.64 : 20,409.12 = 8,075.55 : x
  2. Step 2: Convert to fraction form
    14,789.64/20,409.12 = 8,075.55/x
  3. Step 3: Cross multiply
    14,789.64x = 20,409.12 × 8,075.55
  4. Step 4: Simplify right side
    14,789.64x = 164,814,869.02
  5. Step 5: Solve for x
    x = 164,814,869.02/14,789.64
  6. Step 6: Final answer
    x = 11,143.94

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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.