Home / 19,817.19-29,875.77-18,745.56

Finding the Fourth Proportional to 19,817.19, 29,875.77 and 18,745.56

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Solution

The fourth proportional to 19,817.19, 29,875.77 and 18,745.56 is: 28,260.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,817.19 : 29,875.77 = 18,745.56 : x
  2. Step 2: Convert to fraction form
    19,817.19/29,875.77 = 18,745.56/x
  3. Step 3: Cross multiply
    19,817.19x = 29,875.77 × 18,745.56
  4. Step 4: Simplify right side
    19,817.19x = 560,038,039.08
  5. Step 5: Solve for x
    x = 560,038,039.08/19,817.19
  6. Step 6: Final answer
    x = 28,260.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.