Home / 37,187.19-51,318.29-20,420.19

Finding the Fourth Proportional to 37,187.19, 51,318.29 and 20,420.19

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Solution

The fourth proportional to 37,187.19, 51,318.29 and 20,420.19 is: 28,179.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,187.19 : 51,318.29 = 20,420.19 : x
  2. Step 2: Convert to fraction form
    37,187.19/51,318.29 = 20,420.19/x
  3. Step 3: Cross multiply
    37,187.19x = 51,318.29 × 20,420.19
  4. Step 4: Simplify right side
    37,187.19x = 1,047,929,232.28
  5. Step 5: Solve for x
    x = 1,047,929,232.28/37,187.19
  6. Step 6: Final answer
    x = 28,179.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.