Home / 30,219.30-45,328.95-19,089.90

Finding the Fourth Proportional to 30,219.30, 45,328.95 and 19,089.90

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Solution

The fourth proportional to 30,219.30, 45,328.95 and 19,089.90 is: 28,634.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,219.30 : 45,328.95 = 19,089.90 : x
  2. Step 2: Convert to fraction form
    30,219.30/45,328.95 = 19,089.90/x
  3. Step 3: Cross multiply
    30,219.30x = 45,328.95 × 19,089.90
  4. Step 4: Simplify right side
    30,219.30x = 865,325,122.61
  5. Step 5: Solve for x
    x = 865,325,122.61/30,219.30
  6. Step 6: Final answer
    x = 28,634.85

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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.