Home / 28,289.86-39,066.10-18,235.63

Finding the Fourth Proportional to 28,289.86, 39,066.10 and 18,235.63

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Solution

The fourth proportional to 28,289.86, 39,066.10 and 18,235.63 is: 25,181.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.86 : 39,066.10 = 18,235.63 : x
  2. Step 2: Convert to fraction form
    28,289.86/39,066.10 = 18,235.63/x
  3. Step 3: Cross multiply
    28,289.86x = 39,066.10 × 18,235.63
  4. Step 4: Simplify right side
    28,289.86x = 712,394,948.39
  5. Step 5: Solve for x
    x = 712,394,948.39/28,289.86
  6. Step 6: Final answer
    x = 25,181.99

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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.