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Finding the Fourth Proportional to 21,795.70, 32,705.70 and 9,313.60

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Solution

The fourth proportional to 21,795.70, 32,705.70 and 9,313.60 is: 13,975.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,795.70 : 32,705.70 = 9,313.60 : x
  2. Step 2: Convert to fraction form
    21,795.70/32,705.70 = 9,313.60/x
  3. Step 3: Cross multiply
    21,795.70x = 32,705.70 × 9,313.60
  4. Step 4: Simplify right side
    21,795.70x = 304,607,807.52
  5. Step 5: Solve for x
    x = 304,607,807.52/21,795.70
  6. Step 6: Final answer
    x = 13,975.59

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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.