Home / 28,830.80-43,241.88-11,312.72

Finding the Fourth Proportional to 28,830.80, 43,241.88 and 11,312.72

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Solution

The fourth proportional to 28,830.80, 43,241.88 and 11,312.72 is: 16,967.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,830.80 : 43,241.88 = 11,312.72 : x
  2. Step 2: Convert to fraction form
    28,830.80/43,241.88 = 11,312.72/x
  3. Step 3: Cross multiply
    28,830.80x = 43,241.88 × 11,312.72
  4. Step 4: Simplify right side
    28,830.80x = 489,183,280.71
  5. Step 5: Solve for x
    x = 489,183,280.71/28,830.80
  6. Step 6: Final answer
    x = 16,967.38

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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.