Home / 13,783.08-19,021.50-7,814.64

Finding the Fourth Proportional to 13,783.08, 19,021.50 and 7,814.64

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Solution

The fourth proportional to 13,783.08, 19,021.50 and 7,814.64 is: 10,784.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.08 : 19,021.50 = 7,814.64 : x
  2. Step 2: Convert to fraction form
    13,783.08/19,021.50 = 7,814.64/x
  3. Step 3: Cross multiply
    13,783.08x = 19,021.50 × 7,814.64
  4. Step 4: Simplify right side
    13,783.08x = 148,646,174.76
  5. Step 5: Solve for x
    x = 148,646,174.76/13,783.08
  6. Step 6: Final answer
    x = 10,784.68

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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.