Home / 53,713.52-80,558.10-20,421.74

Finding the Fourth Proportional to 53,713.52, 80,558.10 and 20,421.74

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Solution

The fourth proportional to 53,713.52, 80,558.10 and 20,421.74 is: 30,627.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,713.52 : 80,558.10 = 20,421.74 : x
  2. Step 2: Convert to fraction form
    53,713.52/80,558.10 = 20,421.74/x
  3. Step 3: Cross multiply
    53,713.52x = 80,558.10 × 20,421.74
  4. Step 4: Simplify right side
    53,713.52x = 1,645,136,573.09
  5. Step 5: Solve for x
    x = 1,645,136,573.09/53,713.52
  6. Step 6: Final answer
    x = 30,627.98

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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.