Home / 30,054.02-45,085.14-12,519.75

Finding the Fourth Proportional to 30,054.02, 45,085.14 and 12,519.75

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Solution

The fourth proportional to 30,054.02, 45,085.14 and 12,519.75 is: 18,781.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,054.02 : 45,085.14 = 12,519.75 : x
  2. Step 2: Convert to fraction form
    30,054.02/45,085.14 = 12,519.75/x
  3. Step 3: Cross multiply
    30,054.02x = 45,085.14 × 12,519.75
  4. Step 4: Simplify right side
    30,054.02x = 564,454,618.92
  5. Step 5: Solve for x
    x = 564,454,618.92/30,054.02
  6. Step 6: Final answer
    x = 18,781.33

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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.