Home / 13,780.64-19,021.56-13,075.34

Finding the Fourth Proportional to 13,780.64, 19,021.56 and 13,075.34

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Solution

The fourth proportional to 13,780.64, 19,021.56 and 13,075.34 is: 18,048.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.64 : 19,021.56 = 13,075.34 : x
  2. Step 2: Convert to fraction form
    13,780.64/19,021.56 = 13,075.34/x
  3. Step 3: Cross multiply
    13,780.64x = 19,021.56 × 13,075.34
  4. Step 4: Simplify right side
    13,780.64x = 248,713,364.33
  5. Step 5: Solve for x
    x = 248,713,364.33/13,780.64
  6. Step 6: Final answer
    x = 18,048.03

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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.