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Finding the Fourth Proportional to 19,308.60, 28,946.70 and 10,074.60

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Solution

The fourth proportional to 19,308.60, 28,946.70 and 10,074.60 is: 15,103.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,308.60 : 28,946.70 = 10,074.60 : x
  2. Step 2: Convert to fraction form
    19,308.60/28,946.70 = 10,074.60/x
  3. Step 3: Cross multiply
    19,308.60x = 28,946.70 × 10,074.60
  4. Step 4: Simplify right side
    19,308.60x = 291,626,423.82
  5. Step 5: Solve for x
    x = 291,626,423.82/19,308.60
  6. Step 6: Final answer
    x = 15,103.45

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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.