Home / 55,281.09-82,921.60-13,728.09

Finding the Fourth Proportional to 55,281.09, 82,921.60 and 13,728.09

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Solution

The fourth proportional to 55,281.09, 82,921.60 and 13,728.09 is: 20,592.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,281.09 : 82,921.60 = 13,728.09 : x
  2. Step 2: Convert to fraction form
    55,281.09/82,921.60 = 13,728.09/x
  3. Step 3: Cross multiply
    55,281.09x = 82,921.60 × 13,728.09
  4. Step 4: Simplify right side
    55,281.09x = 1,138,355,187.74
  5. Step 5: Solve for x
    x = 1,138,355,187.74/55,281.09
  6. Step 6: Final answer
    x = 20,592.13

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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.