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Finding the Fourth Proportional to 19,658.60, 29,430.30 and 17,354.60

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Solution

The fourth proportional to 19,658.60, 29,430.30 and 17,354.60 is: 25,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,658.60 : 29,430.30 = 17,354.60 : x
  2. Step 2: Convert to fraction form
    19,658.60/29,430.30 = 17,354.60/x
  3. Step 3: Cross multiply
    19,658.60x = 29,430.30 × 17,354.60
  4. Step 4: Simplify right side
    19,658.60x = 510,751,084.38
  5. Step 5: Solve for x
    x = 510,751,084.38/19,658.60
  6. Step 6: Final answer
    x = 25,981.05

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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.