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Finding the Fourth Proportional to 19,346.40, 28,992.60 and 15,404.40

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Solution

The fourth proportional to 19,346.40, 28,992.60 and 15,404.40 is: 23,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,346.40 : 28,992.60 = 15,404.40 : x
  2. Step 2: Convert to fraction form
    19,346.40/28,992.60 = 15,404.40/x
  3. Step 3: Cross multiply
    19,346.40x = 28,992.60 × 15,404.40
  4. Step 4: Simplify right side
    19,346.40x = 446,613,607.44
  5. Step 5: Solve for x
    x = 446,613,607.44/19,346.40
  6. Step 6: Final answer
    x = 23,085.10

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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.