Home / 28,423.68-39,231.36-17,808

Finding the Fourth Proportional to 28,423.68, 39,231.36 and 17,808

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Solution

The fourth proportional to 28,423.68, 39,231.36 and 17,808 is: 24,579.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.68 : 39,231.36 = 17,808 : x
  2. Step 2: Convert to fraction form
    28,423.68/39,231.36 = 17,808/x
  3. Step 3: Cross multiply
    28,423.68x = 39,231.36 × 17,808
  4. Step 4: Simplify right side
    28,423.68x = 698,632,058.88
  5. Step 5: Solve for x
    x = 698,632,058.88/28,423.68
  6. Step 6: Final answer
    x = 24,579.23

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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.