Home / 28,430.86-42,629.28-13,441.84

Finding the Fourth Proportional to 28,430.86, 42,629.28 and 13,441.84

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Solution

The fourth proportional to 28,430.86, 42,629.28 and 13,441.84 is: 20,154.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.86 : 42,629.28 = 13,441.84 : x
  2. Step 2: Convert to fraction form
    28,430.86/42,629.28 = 13,441.84/x
  3. Step 3: Cross multiply
    28,430.86x = 42,629.28 × 13,441.84
  4. Step 4: Simplify right side
    28,430.86x = 573,015,961.08
  5. Step 5: Solve for x
    x = 573,015,961.08/28,430.86
  6. Step 6: Final answer
    x = 20,154.72

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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.