Home / 19,619.80-27,075-10,667.53

Finding the Fourth Proportional to 19,619.80, 27,075 and 10,667.53

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Solution

The fourth proportional to 19,619.80, 27,075 and 10,667.53 is: 14,721.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.80 : 27,075 = 10,667.53 : x
  2. Step 2: Convert to fraction form
    19,619.80/27,075 = 10,667.53/x
  3. Step 3: Cross multiply
    19,619.80x = 27,075 × 10,667.53
  4. Step 4: Simplify right side
    19,619.80x = 288,823,374.75
  5. Step 5: Solve for x
    x = 288,823,374.75/19,619.80
  6. Step 6: Final answer
    x = 14,721.02

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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.