Home / 53,320.28-79,918.90-20,019.09

Finding the Fourth Proportional to 53,320.28, 79,918.90 and 20,019.09

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Solution

The fourth proportional to 53,320.28, 79,918.90 and 20,019.09 is: 30,005.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,320.28 : 79,918.90 = 20,019.09 : x
  2. Step 2: Convert to fraction form
    53,320.28/79,918.90 = 20,019.09/x
  3. Step 3: Cross multiply
    53,320.28x = 79,918.90 × 20,019.09
  4. Step 4: Simplify right side
    53,320.28x = 1,599,903,901.45
  5. Step 5: Solve for x
    x = 1,599,903,901.45/53,320.28
  6. Step 6: Final answer
    x = 30,005.54

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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.