Home / 28,830.20-43,256.10-11,312.60

Finding the Fourth Proportional to 28,830.20, 43,256.10 and 11,312.60

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Solution

The fourth proportional to 28,830.20, 43,256.10 and 11,312.60 is: 16,973.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,830.20 : 43,256.10 = 11,312.60 : x
  2. Step 2: Convert to fraction form
    28,830.20/43,256.10 = 11,312.60/x
  3. Step 3: Cross multiply
    28,830.20x = 43,256.10 × 11,312.60
  4. Step 4: Simplify right side
    28,830.20x = 489,338,956.86
  5. Step 5: Solve for x
    x = 489,338,956.86/28,830.20
  6. Step 6: Final answer
    x = 16,973.14

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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.