Home / 13,820.55-19,075.44-8,783.79

Finding the Fourth Proportional to 13,820.55, 19,075.44 and 8,783.79

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Solution

The fourth proportional to 13,820.55, 19,075.44 and 8,783.79 is: 12,123.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.55 : 19,075.44 = 8,783.79 : x
  2. Step 2: Convert to fraction form
    13,820.55/19,075.44 = 8,783.79/x
  3. Step 3: Cross multiply
    13,820.55x = 19,075.44 × 8,783.79
  4. Step 4: Simplify right side
    13,820.55x = 167,554,659.12
  5. Step 5: Solve for x
    x = 167,554,659.12/13,820.55
  6. Step 6: Final answer
    x = 12,123.59

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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.