Home / 20,453.91-28,225.83-11,501.18

Finding the Fourth Proportional to 20,453.91, 28,225.83 and 11,501.18

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Solution

The fourth proportional to 20,453.91, 28,225.83 and 11,501.18 is: 15,871.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.91 : 28,225.83 = 11,501.18 : x
  2. Step 2: Convert to fraction form
    20,453.91/28,225.83 = 11,501.18/x
  3. Step 3: Cross multiply
    20,453.91x = 28,225.83 × 11,501.18
  4. Step 4: Simplify right side
    20,453.91x = 324,630,152.84
  5. Step 5: Solve for x
    x = 324,630,152.84/20,453.91
  6. Step 6: Final answer
    x = 15,871.30

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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.