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Finding the Fourth Proportional to 39,124.32, 53,986.32 and 22,130.88

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Solution

The fourth proportional to 39,124.32, 53,986.32 and 22,130.88 is: 30,537.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,124.32 : 53,986.32 = 22,130.88 : x
  2. Step 2: Convert to fraction form
    39,124.32/53,986.32 = 22,130.88/x
  3. Step 3: Cross multiply
    39,124.32x = 53,986.32 × 22,130.88
  4. Step 4: Simplify right side
    39,124.32x = 1,194,764,769.56
  5. Step 5: Solve for x
    x = 1,194,764,769.56/39,124.32
  6. Step 6: Final answer
    x = 30,537.65

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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.