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Finding the Fourth Proportional to 19,606.20, 29,360.70 and 15,718.20

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Solution

The fourth proportional to 19,606.20, 29,360.70 and 15,718.20 is: 23,538.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,606.20 : 29,360.70 = 15,718.20 : x
  2. Step 2: Convert to fraction form
    19,606.20/29,360.70 = 15,718.20/x
  3. Step 3: Cross multiply
    19,606.20x = 29,360.70 × 15,718.20
  4. Step 4: Simplify right side
    19,606.20x = 461,497,354.74
  5. Step 5: Solve for x
    x = 461,497,354.74/19,606.20
  6. Step 6: Final answer
    x = 23,538.34

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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.