Home / 42,914.28-64,355.22-20,720.28

Finding the Fourth Proportional to 42,914.28, 64,355.22 and 20,720.28

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Solution

The fourth proportional to 42,914.28, 64,355.22 and 20,720.28 is: 31,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,914.28 : 64,355.22 = 20,720.28 : x
  2. Step 2: Convert to fraction form
    42,914.28/64,355.22 = 20,720.28/x
  3. Step 3: Cross multiply
    42,914.28x = 64,355.22 × 20,720.28
  4. Step 4: Simplify right side
    42,914.28x = 1,333,458,177.86
  5. Step 5: Solve for x
    x = 1,333,458,177.86/42,914.28
  6. Step 6: Final answer
    x = 31,072.60

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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.