Home / 19,316.60-28,969.32-8,780.75

Finding the Fourth Proportional to 19,316.60, 28,969.32 and 8,780.75

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Solution

The fourth proportional to 19,316.60, 28,969.32 and 8,780.75 is: 13,168.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,316.60 : 28,969.32 = 8,780.75 : x
  2. Step 2: Convert to fraction form
    19,316.60/28,969.32 = 8,780.75/x
  3. Step 3: Cross multiply
    19,316.60x = 28,969.32 × 8,780.75
  4. Step 4: Simplify right side
    19,316.60x = 254,372,356.59
  5. Step 5: Solve for x
    x = 254,372,356.59/19,316.60
  6. Step 6: Final answer
    x = 13,168.59

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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.