Home / 30,231.07-41,730.50-20,155.83

Finding the Fourth Proportional to 30,231.07, 41,730.50 and 20,155.83

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Solution

The fourth proportional to 30,231.07, 41,730.50 and 20,155.83 is: 27,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,231.07 : 41,730.50 = 20,155.83 : x
  2. Step 2: Convert to fraction form
    30,231.07/41,730.50 = 20,155.83/x
  3. Step 3: Cross multiply
    30,231.07x = 41,730.50 × 20,155.83
  4. Step 4: Simplify right side
    30,231.07x = 841,112,763.04
  5. Step 5: Solve for x
    x = 841,112,763.04/30,231.07
  6. Step 6: Final answer
    x = 27,822.80

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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.