Home / 20,358.08-30,492.01-15,643.39

Finding the Fourth Proportional to 20,358.08, 30,492.01 and 15,643.39

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Solution

The fourth proportional to 20,358.08, 30,492.01 and 15,643.39 is: 23,430.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.08 : 30,492.01 = 15,643.39 : x
  2. Step 2: Convert to fraction form
    20,358.08/30,492.01 = 15,643.39/x
  3. Step 3: Cross multiply
    20,358.08x = 30,492.01 × 15,643.39
  4. Step 4: Simplify right side
    20,358.08x = 476,998,173.64
  5. Step 5: Solve for x
    x = 476,998,173.64/20,358.08
  6. Step 6: Final answer
    x = 23,430.41

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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.