Home / 14,905.74-20,570.21-8,190.97

Finding the Fourth Proportional to 14,905.74, 20,570.21 and 8,190.97

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Solution

The fourth proportional to 14,905.74, 20,570.21 and 8,190.97 is: 11,303.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,905.74 : 20,570.21 = 8,190.97 : x
  2. Step 2: Convert to fraction form
    14,905.74/20,570.21 = 8,190.97/x
  3. Step 3: Cross multiply
    14,905.74x = 20,570.21 × 8,190.97
  4. Step 4: Simplify right side
    14,905.74x = 168,489,973.00
  5. Step 5: Solve for x
    x = 168,489,973.00/14,905.74
  6. Step 6: Final answer
    x = 11,303.70

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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.