Home / 28,686.68-43,038.57-13,705.02

Finding the Fourth Proportional to 28,686.68, 43,038.57 and 13,705.02

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Solution

The fourth proportional to 28,686.68, 43,038.57 and 13,705.02 is: 20,561.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.68 : 43,038.57 = 13,705.02 : x
  2. Step 2: Convert to fraction form
    28,686.68/43,038.57 = 13,705.02/x
  3. Step 3: Cross multiply
    28,686.68x = 43,038.57 × 13,705.02
  4. Step 4: Simplify right side
    28,686.68x = 589,844,514.02
  5. Step 5: Solve for x
    x = 589,844,514.02/28,686.68
  6. Step 6: Final answer
    x = 20,561.62

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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.