Home / 20,424.79-30,629.35-7,943.19

Finding the Fourth Proportional to 20,424.79, 30,629.35 and 7,943.19

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Solution

The fourth proportional to 20,424.79, 30,629.35 and 7,943.19 is: 11,911.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.79 : 30,629.35 = 7,943.19 : x
  2. Step 2: Convert to fraction form
    20,424.79/30,629.35 = 7,943.19/x
  3. Step 3: Cross multiply
    20,424.79x = 30,629.35 × 7,943.19
  4. Step 4: Simplify right side
    20,424.79x = 243,294,746.63
  5. Step 5: Solve for x
    x = 243,294,746.63/20,424.79
  6. Step 6: Final answer
    x = 11,911.74

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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.