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Finding the Fourth Proportional to 25,980.39, 38,970.59 and 9,340.47

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Solution

The fourth proportional to 25,980.39, 38,970.59 and 9,340.47 is: 14,010.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,980.39 : 38,970.59 = 9,340.47 : x
  2. Step 2: Convert to fraction form
    25,980.39/38,970.59 = 9,340.47/x
  3. Step 3: Cross multiply
    25,980.39x = 38,970.59 × 9,340.47
  4. Step 4: Simplify right side
    25,980.39x = 364,003,580.07
  5. Step 5: Solve for x
    x = 364,003,580.07/25,980.39
  6. Step 6: Final answer
    x = 14,010.71

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Similar ratio
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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.