Home / 15,289.86-21,100.84-8,577.60

Finding the Fourth Proportional to 15,289.86, 21,100.84 and 8,577.60

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Solution

The fourth proportional to 15,289.86, 21,100.84 and 8,577.60 is: 11,837.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.86 : 21,100.84 = 8,577.60 : x
  2. Step 2: Convert to fraction form
    15,289.86/21,100.84 = 8,577.60/x
  3. Step 3: Cross multiply
    15,289.86x = 21,100.84 × 8,577.60
  4. Step 4: Simplify right side
    15,289.86x = 180,994,565.18
  5. Step 5: Solve for x
    x = 180,994,565.18/15,289.86
  6. Step 6: Final answer
    x = 11,837.56

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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.