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Finding the Fourth Proportional to 28,673.70, 43,010.55 and 16,980.90

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Solution

The fourth proportional to 28,673.70, 43,010.55 and 16,980.90 is: 25,471.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,673.70 : 43,010.55 = 16,980.90 : x
  2. Step 2: Convert to fraction form
    28,673.70/43,010.55 = 16,980.90/x
  3. Step 3: Cross multiply
    28,673.70x = 43,010.55 × 16,980.90
  4. Step 4: Simplify right side
    28,673.70x = 730,357,848.50
  5. Step 5: Solve for x
    x = 730,357,848.50/28,673.70
  6. Step 6: Final answer
    x = 25,471.35

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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.