Home / 28,813.75-39,773.91-19,387.78

Finding the Fourth Proportional to 28,813.75, 39,773.91 and 19,387.78

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Solution

The fourth proportional to 28,813.75, 39,773.91 and 19,387.78 is: 26,762.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,813.75 : 39,773.91 = 19,387.78 : x
  2. Step 2: Convert to fraction form
    28,813.75/39,773.91 = 19,387.78/x
  3. Step 3: Cross multiply
    28,813.75x = 39,773.91 × 19,387.78
  4. Step 4: Simplify right side
    28,813.75x = 771,127,816.82
  5. Step 5: Solve for x
    x = 771,127,816.82/28,813.75
  6. Step 6: Final answer
    x = 26,762.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.