Home / 19,231.80-28,890.90-18,497.40

Finding the Fourth Proportional to 19,231.80, 28,890.90 and 18,497.40

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Solution

The fourth proportional to 19,231.80, 28,890.90 and 18,497.40 is: 27,787.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.80 : 28,890.90 = 18,497.40 : x
  2. Step 2: Convert to fraction form
    19,231.80/28,890.90 = 18,497.40/x
  3. Step 3: Cross multiply
    19,231.80x = 28,890.90 × 18,497.40
  4. Step 4: Simplify right side
    19,231.80x = 534,406,533.66
  5. Step 5: Solve for x
    x = 534,406,533.66/19,231.80
  6. Step 6: Final answer
    x = 27,787.65

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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.