Home / 30,055.78-45,087.77-12,521.50

Finding the Fourth Proportional to 30,055.78, 45,087.77 and 12,521.50

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Solution

The fourth proportional to 30,055.78, 45,087.77 and 12,521.50 is: 18,783.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,055.78 : 45,087.77 = 12,521.50 : x
  2. Step 2: Convert to fraction form
    30,055.78/45,087.77 = 12,521.50/x
  3. Step 3: Cross multiply
    30,055.78x = 45,087.77 × 12,521.50
  4. Step 4: Simplify right side
    30,055.78x = 564,566,512.06
  5. Step 5: Solve for x
    x = 564,566,512.06/30,055.78
  6. Step 6: Final answer
    x = 18,783.96

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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.