Home / 28,320.84-42,503.94-16,643.88

Finding the Fourth Proportional to 28,320.84, 42,503.94 and 16,643.88

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Solution

The fourth proportional to 28,320.84, 42,503.94 and 16,643.88 is: 24,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.84 : 42,503.94 = 16,643.88 : x
  2. Step 2: Convert to fraction form
    28,320.84/42,503.94 = 16,643.88/x
  3. Step 3: Cross multiply
    28,320.84x = 42,503.94 × 16,643.88
  4. Step 4: Simplify right side
    28,320.84x = 707,430,476.89
  5. Step 5: Solve for x
    x = 707,430,476.89/28,320.84
  6. Step 6: Final answer
    x = 24,979.15

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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.