Home / 53,438.70-80,158.05-13,999.80

Finding the Fourth Proportional to 53,438.70, 80,158.05 and 13,999.80

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Solution

The fourth proportional to 53,438.70, 80,158.05 and 13,999.80 is: 20,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,438.70 : 80,158.05 = 13,999.80 : x
  2. Step 2: Convert to fraction form
    53,438.70/80,158.05 = 13,999.80/x
  3. Step 3: Cross multiply
    53,438.70x = 80,158.05 × 13,999.80
  4. Step 4: Simplify right side
    53,438.70x = 1,122,196,668.39
  5. Step 5: Solve for x
    x = 1,122,196,668.39/53,438.70
  6. Step 6: Final answer
    x = 20,999.70

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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.