Home / 20,407.14-28,164.95-12,453.99

Finding the Fourth Proportional to 20,407.14, 28,164.95 and 12,453.99

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Solution

The fourth proportional to 20,407.14, 28,164.95 and 12,453.99 is: 17,188.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407.14 : 28,164.95 = 12,453.99 : x
  2. Step 2: Convert to fraction form
    20,407.14/28,164.95 = 12,453.99/x
  3. Step 3: Cross multiply
    20,407.14x = 28,164.95 × 12,453.99
  4. Step 4: Simplify right side
    20,407.14x = 350,765,884.46
  5. Step 5: Solve for x
    x = 350,765,884.46/20,407.14
  6. Step 6: Final answer
    x = 17,188.39

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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.