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Finding the Fourth Proportional to 19,386.20, 29,007.30 and 14,202.20

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Solution

The fourth proportional to 19,386.20, 29,007.30 and 14,202.20 is: 21,250.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,386.20 : 29,007.30 = 14,202.20 : x
  2. Step 2: Convert to fraction form
    19,386.20/29,007.30 = 14,202.20/x
  3. Step 3: Cross multiply
    19,386.20x = 29,007.30 × 14,202.20
  4. Step 4: Simplify right side
    19,386.20x = 411,967,476.06
  5. Step 5: Solve for x
    x = 411,967,476.06/19,386.20
  6. Step 6: Final answer
    x = 21,250.55

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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.