Home / 18,830.88-28,208.05-15,112.98

Finding the Fourth Proportional to 18,830.88, 28,208.05 and 15,112.98

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Solution

The fourth proportional to 18,830.88, 28,208.05 and 15,112.98 is: 22,638.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.88 : 28,208.05 = 15,112.98 : x
  2. Step 2: Convert to fraction form
    18,830.88/28,208.05 = 15,112.98/x
  3. Step 3: Cross multiply
    18,830.88x = 28,208.05 × 15,112.98
  4. Step 4: Simplify right side
    18,830.88x = 426,307,657.71
  5. Step 5: Solve for x
    x = 426,307,657.71/18,830.88
  6. Step 6: Final answer
    x = 22,638.75

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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.