Home / 28,678.20-42,962.63-16,802.79

Finding the Fourth Proportional to 28,678.20, 42,962.63 and 16,802.79

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Solution

The fourth proportional to 28,678.20, 42,962.63 and 16,802.79 is: 25,172.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.20 : 42,962.63 = 16,802.79 : x
  2. Step 2: Convert to fraction form
    28,678.20/42,962.63 = 16,802.79/x
  3. Step 3: Cross multiply
    28,678.20x = 42,962.63 × 16,802.79
  4. Step 4: Simplify right side
    28,678.20x = 721,891,965.72
  5. Step 5: Solve for x
    x = 721,891,965.72/28,678.20
  6. Step 6: Final answer
    x = 25,172.15

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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.