Home / 20,583.49-28,405.26-11,152.05

Finding the Fourth Proportional to 20,583.49, 28,405.26 and 11,152.05

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Solution

The fourth proportional to 20,583.49, 28,405.26 and 11,152.05 is: 15,389.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.49 : 28,405.26 = 11,152.05 : x
  2. Step 2: Convert to fraction form
    20,583.49/28,405.26 = 11,152.05/x
  3. Step 3: Cross multiply
    20,583.49x = 28,405.26 × 11,152.05
  4. Step 4: Simplify right side
    20,583.49x = 316,776,981.57
  5. Step 5: Solve for x
    x = 316,776,981.57/20,583.49
  6. Step 6: Final answer
    x = 15,389.86

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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.