Home / 20,784.75-31,190.81-9,097.98

Finding the Fourth Proportional to 20,784.75, 31,190.81 and 9,097.98

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Solution

The fourth proportional to 20,784.75, 31,190.81 and 9,097.98 is: 13,652.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.75 : 31,190.81 = 9,097.98 : x
  2. Step 2: Convert to fraction form
    20,784.75/31,190.81 = 9,097.98/x
  3. Step 3: Cross multiply
    20,784.75x = 31,190.81 × 9,097.98
  4. Step 4: Simplify right side
    20,784.75x = 283,773,320.07
  5. Step 5: Solve for x
    x = 283,773,320.07/20,784.75
  6. Step 6: Final answer
    x = 13,652.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.