Home / 37,983.45-52,415.82-20,987.40

Finding the Fourth Proportional to 37,983.45, 52,415.82 and 20,987.40

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Solution

The fourth proportional to 37,983.45, 52,415.82 and 20,987.40 is: 28,961.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,983.45 : 52,415.82 = 20,987.40 : x
  2. Step 2: Convert to fraction form
    37,983.45/52,415.82 = 20,987.40/x
  3. Step 3: Cross multiply
    37,983.45x = 52,415.82 × 20,987.40
  4. Step 4: Simplify right side
    37,983.45x = 1,100,071,780.67
  5. Step 5: Solve for x
    x = 1,100,071,780.67/37,983.45
  6. Step 6: Final answer
    x = 28,961.87

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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.