Home / 18,075.79-27,111.12-6,987.70

Finding the Fourth Proportional to 18,075.79, 27,111.12 and 6,987.70

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Solution

The fourth proportional to 18,075.79, 27,111.12 and 6,987.70 is: 10,480.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,075.79 : 27,111.12 = 6,987.70 : x
  2. Step 2: Convert to fraction form
    18,075.79/27,111.12 = 6,987.70/x
  3. Step 3: Cross multiply
    18,075.79x = 27,111.12 × 6,987.70
  4. Step 4: Simplify right side
    18,075.79x = 189,444,373.22
  5. Step 5: Solve for x
    x = 189,444,373.22/18,075.79
  6. Step 6: Final answer
    x = 10,480.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.