Home / 28,359.20-39,106.68-18,795.76

Finding the Fourth Proportional to 28,359.20, 39,106.68 and 18,795.76

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Solution

The fourth proportional to 28,359.20, 39,106.68 and 18,795.76 is: 25,918.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359.20 : 39,106.68 = 18,795.76 : x
  2. Step 2: Convert to fraction form
    28,359.20/39,106.68 = 18,795.76/x
  3. Step 3: Cross multiply
    28,359.20x = 39,106.68 × 18,795.76
  4. Step 4: Simplify right side
    28,359.20x = 735,039,929.13
  5. Step 5: Solve for x
    x = 735,039,929.13/28,359.20
  6. Step 6: Final answer
    x = 25,918.93

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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.