Home / 37,679.04-51,999.12-20,912.40

Finding the Fourth Proportional to 37,679.04, 51,999.12 and 20,912.40

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Solution

The fourth proportional to 37,679.04, 51,999.12 and 20,912.40 is: 28,860.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,679.04 : 51,999.12 = 20,912.40 : x
  2. Step 2: Convert to fraction form
    37,679.04/51,999.12 = 20,912.40/x
  3. Step 3: Cross multiply
    37,679.04x = 51,999.12 × 20,912.40
  4. Step 4: Simplify right side
    37,679.04x = 1,087,426,397.09
  5. Step 5: Solve for x
    x = 1,087,426,397.09/37,679.04
  6. Step 6: Final answer
    x = 28,860.25

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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.