Home / 28,219.35-42,337.80-11,580.75

Finding the Fourth Proportional to 28,219.35, 42,337.80 and 11,580.75

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Solution

The fourth proportional to 28,219.35, 42,337.80 and 11,580.75 is: 17,374.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.35 : 42,337.80 = 11,580.75 : x
  2. Step 2: Convert to fraction form
    28,219.35/42,337.80 = 11,580.75/x
  3. Step 3: Cross multiply
    28,219.35x = 42,337.80 × 11,580.75
  4. Step 4: Simplify right side
    28,219.35x = 490,303,477.35
  5. Step 5: Solve for x
    x = 490,303,477.35/28,219.35
  6. Step 6: Final answer
    x = 17,374.73

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1.5x scale

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.