Home / 23,213.72-31,998.60-19,430.21

Finding the Fourth Proportional to 23,213.72, 31,998.60 and 19,430.21

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Solution

The fourth proportional to 23,213.72, 31,998.60 and 19,430.21 is: 26,783.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,213.72 : 31,998.60 = 19,430.21 : x
  2. Step 2: Convert to fraction form
    23,213.72/31,998.60 = 19,430.21/x
  3. Step 3: Cross multiply
    23,213.72x = 31,998.60 × 19,430.21
  4. Step 4: Simplify right side
    23,213.72x = 621,739,357.71
  5. Step 5: Solve for x
    x = 621,739,357.71/23,213.72
  6. Step 6: Final answer
    x = 26,783.28

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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.