Home / 30,054.55-45,085.93-12,520.28

Finding the Fourth Proportional to 30,054.55, 45,085.93 and 12,520.28

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Solution

The fourth proportional to 30,054.55, 45,085.93 and 12,520.28 is: 18,782.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,054.55 : 45,085.93 = 12,520.28 : x
  2. Step 2: Convert to fraction form
    30,054.55/45,085.93 = 12,520.28/x
  3. Step 3: Cross multiply
    30,054.55x = 45,085.93 × 12,520.28
  4. Step 4: Simplify right side
    30,054.55x = 564,488,563.14
  5. Step 5: Solve for x
    x = 564,488,563.14/30,054.55
  6. Step 6: Final answer
    x = 18,782.13

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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.