Home / 28,811.90-43,208.10-14,011.40

Finding the Fourth Proportional to 28,811.90, 43,208.10 and 14,011.40

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Solution

The fourth proportional to 28,811.90, 43,208.10 and 14,011.40 is: 21,012.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811.90 : 43,208.10 = 14,011.40 : x
  2. Step 2: Convert to fraction form
    28,811.90/43,208.10 = 14,011.40/x
  3. Step 3: Cross multiply
    28,811.90x = 43,208.10 × 14,011.40
  4. Step 4: Simplify right side
    28,811.90x = 605,405,756.30
  5. Step 5: Solve for x
    x = 605,405,756.30/28,811.90
  6. Step 6: Final answer
    x = 21,012.35

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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.