Home / 28,737.44-39,655.98-15,990.20

Finding the Fourth Proportional to 28,737.44, 39,655.98 and 15,990.20

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Solution

The fourth proportional to 28,737.44, 39,655.98 and 15,990.20 is: 22,065.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,737.44 : 39,655.98 = 15,990.20 : x
  2. Step 2: Convert to fraction form
    28,737.44/39,655.98 = 15,990.20/x
  3. Step 3: Cross multiply
    28,737.44x = 39,655.98 × 15,990.20
  4. Step 4: Simplify right side
    28,737.44x = 634,107,051.40
  5. Step 5: Solve for x
    x = 634,107,051.40/28,737.44
  6. Step 6: Final answer
    x = 22,065.54

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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.