Home / 30,054.84-45,086.36-12,520.56

Finding the Fourth Proportional to 30,054.84, 45,086.36 and 12,520.56

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Solution

The fourth proportional to 30,054.84, 45,086.36 and 12,520.56 is: 18,782.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,054.84 : 45,086.36 = 12,520.56 : x
  2. Step 2: Convert to fraction form
    30,054.84/45,086.36 = 12,520.56/x
  3. Step 3: Cross multiply
    30,054.84x = 45,086.36 × 12,520.56
  4. Step 4: Simplify right side
    30,054.84x = 564,506,525.67
  5. Step 5: Solve for x
    x = 564,506,525.67/30,054.84
  6. Step 6: Final answer
    x = 18,782.55

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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.