Home / 20,705.93-28,574.15-11,274.48

Finding the Fourth Proportional to 20,705.93, 28,574.15 and 11,274.48

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Solution

The fourth proportional to 20,705.93, 28,574.15 and 11,274.48 is: 15,558.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.93 : 28,574.15 = 11,274.48 : x
  2. Step 2: Convert to fraction form
    20,705.93/28,574.15 = 11,274.48/x
  3. Step 3: Cross multiply
    20,705.93x = 28,574.15 × 11,274.48
  4. Step 4: Simplify right side
    20,705.93x = 322,158,626.32
  5. Step 5: Solve for x
    x = 322,158,626.32/20,705.93
  6. Step 6: Final answer
    x = 15,558.77

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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.