Home / 28,280.01-38,990.39-17,665.77

Finding the Fourth Proportional to 28,280.01, 38,990.39 and 17,665.77

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Solution

The fourth proportional to 28,280.01, 38,990.39 and 17,665.77 is: 24,356.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.01 : 38,990.39 = 17,665.77 : x
  2. Step 2: Convert to fraction form
    28,280.01/38,990.39 = 17,665.77/x
  3. Step 3: Cross multiply
    28,280.01x = 38,990.39 × 17,665.77
  4. Step 4: Simplify right side
    28,280.01x = 688,795,173.62
  5. Step 5: Solve for x
    x = 688,795,173.62/28,280.01
  6. Step 6: Final answer
    x = 24,356.26

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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.