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Finding the Fourth Proportional to 37,130.40, 55,684.80 and 20,498.40

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Solution

The fourth proportional to 37,130.40, 55,684.80 and 20,498.40 is: 30,741.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,130.40 : 55,684.80 = 20,498.40 : x
  2. Step 2: Convert to fraction form
    37,130.40/55,684.80 = 20,498.40/x
  3. Step 3: Cross multiply
    37,130.40x = 55,684.80 × 20,498.40
  4. Step 4: Simplify right side
    37,130.40x = 1,141,449,304.32
  5. Step 5: Solve for x
    x = 1,141,449,304.32/37,130.40
  6. Step 6: Final answer
    x = 30,741.64

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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.