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Finding the Fourth Proportional to 19,820.70, 29,673.45 and 19,244.70

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Solution

The fourth proportional to 19,820.70, 29,673.45 and 19,244.70 is: 28,811.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.70 : 29,673.45 = 19,244.70 : x
  2. Step 2: Convert to fraction form
    19,820.70/29,673.45 = 19,244.70/x
  3. Step 3: Cross multiply
    19,820.70x = 29,673.45 × 19,244.70
  4. Step 4: Simplify right side
    19,820.70x = 571,056,643.22
  5. Step 5: Solve for x
    x = 571,056,643.22/19,820.70
  6. Step 6: Final answer
    x = 28,811.12

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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.