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Finding the Fourth Proportional to 19,795.80, 29,693.70 and 9,427.80

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Solution

The fourth proportional to 19,795.80, 29,693.70 and 9,427.80 is: 14,141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,795.80 : 29,693.70 = 9,427.80 : x
  2. Step 2: Convert to fraction form
    19,795.80/29,693.70 = 9,427.80/x
  3. Step 3: Cross multiply
    19,795.80x = 29,693.70 × 9,427.80
  4. Step 4: Simplify right side
    19,795.80x = 279,946,264.86
  5. Step 5: Solve for x
    x = 279,946,264.86/19,795.80
  6. Step 6: Final answer
    x = 14,141.70

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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.