Home / 28,690.84-39,589.88-15,943.96

Finding the Fourth Proportional to 28,690.84, 39,589.88 and 15,943.96

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Solution

The fourth proportional to 28,690.84, 39,589.88 and 15,943.96 is: 22,000.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,690.84 : 39,589.88 = 15,943.96 : x
  2. Step 2: Convert to fraction form
    28,690.84/39,589.88 = 15,943.96/x
  3. Step 3: Cross multiply
    28,690.84x = 39,589.88 × 15,943.96
  4. Step 4: Simplify right side
    28,690.84x = 631,219,463.12
  5. Step 5: Solve for x
    x = 631,219,463.12/28,690.84
  6. Step 6: Final answer
    x = 22,000.73

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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.