Home / 28,975.80-43,463.70-21,977.40

Finding the Fourth Proportional to 28,975.80, 43,463.70 and 21,977.40

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Solution

The fourth proportional to 28,975.80, 43,463.70 and 21,977.40 is: 32,966.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,975.80 : 43,463.70 = 21,977.40 : x
  2. Step 2: Convert to fraction form
    28,975.80/43,463.70 = 21,977.40/x
  3. Step 3: Cross multiply
    28,975.80x = 43,463.70 × 21,977.40
  4. Step 4: Simplify right side
    28,975.80x = 955,219,120.38
  5. Step 5: Solve for x
    x = 955,219,120.38/28,975.80
  6. Step 6: Final answer
    x = 32,966.10

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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.