Home / 52,013.88-77,990.70-20,386.98

Finding the Fourth Proportional to 52,013.88, 77,990.70 and 20,386.98

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Solution

The fourth proportional to 52,013.88, 77,990.70 and 20,386.98 is: 30,568.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,013.88 : 77,990.70 = 20,386.98 : x
  2. Step 2: Convert to fraction form
    52,013.88/77,990.70 = 20,386.98/x
  3. Step 3: Cross multiply
    52,013.88x = 77,990.70 × 20,386.98
  4. Step 4: Simplify right side
    52,013.88x = 1,589,994,841.09
  5. Step 5: Solve for x
    x = 1,589,994,841.09/52,013.88
  6. Step 6: Final answer
    x = 30,568.66

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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.