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Finding the Fourth Proportional to 25,980.09, 38,946.78 and 9,336.21

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Solution

The fourth proportional to 25,980.09, 38,946.78 and 9,336.21 is: 13,995.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,980.09 : 38,946.78 = 9,336.21 : x
  2. Step 2: Convert to fraction form
    25,980.09/38,946.78 = 9,336.21/x
  3. Step 3: Cross multiply
    25,980.09x = 38,946.78 × 9,336.21
  4. Step 4: Simplify right side
    25,980.09x = 363,615,316.90
  5. Step 5: Solve for x
    x = 363,615,316.90/25,980.09
  6. Step 6: Final answer
    x = 13,995.92

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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.