Home / 13,820.39-19,075.22-8,783.63

Finding the Fourth Proportional to 13,820.39, 19,075.22 and 8,783.63

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Solution

The fourth proportional to 13,820.39, 19,075.22 and 8,783.63 is: 12,123.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.39 : 19,075.22 = 8,783.63 : x
  2. Step 2: Convert to fraction form
    13,820.39/19,075.22 = 8,783.63/x
  3. Step 3: Cross multiply
    13,820.39x = 19,075.22 × 8,783.63
  4. Step 4: Simplify right side
    13,820.39x = 167,549,674.65
  5. Step 5: Solve for x
    x = 167,549,674.65/13,820.39
  6. Step 6: Final answer
    x = 12,123.37

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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.