Home / 28,410.24-39,191.72-21,684.19

Finding the Fourth Proportional to 28,410.24, 39,191.72 and 21,684.19

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Solution

The fourth proportional to 28,410.24, 39,191.72 and 21,684.19 is: 29,913.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,410.24 : 39,191.72 = 21,684.19 : x
  2. Step 2: Convert to fraction form
    28,410.24/39,191.72 = 21,684.19/x
  3. Step 3: Cross multiply
    28,410.24x = 39,191.72 × 21,684.19
  4. Step 4: Simplify right side
    28,410.24x = 849,840,918.29
  5. Step 5: Solve for x
    x = 849,840,918.29/28,410.24
  6. Step 6: Final answer
    x = 29,913.19

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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.