Home / 43,830.60-65,721.60-18,866.40

Finding the Fourth Proportional to 43,830.60, 65,721.60 and 18,866.40

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Solution

The fourth proportional to 43,830.60, 65,721.60 and 18,866.40 is: 28,289.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,830.60 : 65,721.60 = 18,866.40 : x
  2. Step 2: Convert to fraction form
    43,830.60/65,721.60 = 18,866.40/x
  3. Step 3: Cross multiply
    43,830.60x = 65,721.60 × 18,866.40
  4. Step 4: Simplify right side
    43,830.60x = 1,239,929,994.24
  5. Step 5: Solve for x
    x = 1,239,929,994.24/43,830.60
  6. Step 6: Final answer
    x = 28,289.14

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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.