Home / 13,783.57-19,023.26-7,816.70

Finding the Fourth Proportional to 13,783.57, 19,023.26 and 7,816.70

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Solution

The fourth proportional to 13,783.57, 19,023.26 and 7,816.70 is: 10,788.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.57 : 19,023.26 = 7,816.70 : x
  2. Step 2: Convert to fraction form
    13,783.57/19,023.26 = 7,816.70/x
  3. Step 3: Cross multiply
    13,783.57x = 19,023.26 × 7,816.70
  4. Step 4: Simplify right side
    13,783.57x = 148,699,124.92
  5. Step 5: Solve for x
    x = 148,699,124.92/13,783.57
  6. Step 6: Final answer
    x = 10,788.15

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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.