Home / 28,870.20-43,309.65-12,230.30

Finding the Fourth Proportional to 28,870.20, 43,309.65 and 12,230.30

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Solution

The fourth proportional to 28,870.20, 43,309.65 and 12,230.30 is: 18,347.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870.20 : 43,309.65 = 12,230.30 : x
  2. Step 2: Convert to fraction form
    28,870.20/43,309.65 = 12,230.30/x
  3. Step 3: Cross multiply
    28,870.20x = 43,309.65 × 12,230.30
  4. Step 4: Simplify right side
    28,870.20x = 529,690,012.40
  5. Step 5: Solve for x
    x = 529,690,012.40/28,870.20
  6. Step 6: Final answer
    x = 18,347.29

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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.