Home / 30,279.88-45,368.79-19,199.08

Finding the Fourth Proportional to 30,279.88, 45,368.79 and 19,199.08

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Solution

The fourth proportional to 30,279.88, 45,368.79 and 19,199.08 is: 28,766.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279.88 : 45,368.79 = 19,199.08 : x
  2. Step 2: Convert to fraction form
    30,279.88/45,368.79 = 19,199.08/x
  3. Step 3: Cross multiply
    30,279.88x = 45,368.79 × 19,199.08
  4. Step 4: Simplify right side
    30,279.88x = 871,039,028.71
  5. Step 5: Solve for x
    x = 871,039,028.71/30,279.88
  6. Step 6: Final answer
    x = 28,766.26

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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.