Home / 37,985.40-52,419.69-20,990.88

Finding the Fourth Proportional to 37,985.40, 52,419.69 and 20,990.88

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Solution

The fourth proportional to 37,985.40, 52,419.69 and 20,990.88 is: 28,967.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,985.40 : 52,419.69 = 20,990.88 : x
  2. Step 2: Convert to fraction form
    37,985.40/52,419.69 = 20,990.88/x
  3. Step 3: Cross multiply
    37,985.40x = 52,419.69 × 20,990.88
  4. Step 4: Simplify right side
    37,985.40x = 1,100,335,422.43
  5. Step 5: Solve for x
    x = 1,100,335,422.43/37,985.40
  6. Step 6: Final answer
    x = 28,967.32

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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.