Home / 20,430.09-30,637.23-7,948.41

Finding the Fourth Proportional to 20,430.09, 30,637.23 and 7,948.41

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Solution

The fourth proportional to 20,430.09, 30,637.23 and 7,948.41 is: 11,919.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.09 : 30,637.23 = 7,948.41 : x
  2. Step 2: Convert to fraction form
    20,430.09/30,637.23 = 7,948.41/x
  3. Step 3: Cross multiply
    20,430.09x = 30,637.23 × 7,948.41
  4. Step 4: Simplify right side
    20,430.09x = 243,517,265.30
  5. Step 5: Solve for x
    x = 243,517,265.30/20,430.09
  6. Step 6: Final answer
    x = 11,919.54

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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.