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Finding the Fourth Proportional to 18,572.54, 25,615.80 and 12,907.22

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Solution

The fourth proportional to 18,572.54, 25,615.80 and 12,907.22 is: 17,802.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.54 : 25,615.80 = 12,907.22 : x
  2. Step 2: Convert to fraction form
    18,572.54/25,615.80 = 12,907.22/x
  3. Step 3: Cross multiply
    18,572.54x = 25,615.80 × 12,907.22
  4. Step 4: Simplify right side
    18,572.54x = 330,628,766.08
  5. Step 5: Solve for x
    x = 330,628,766.08/18,572.54
  6. Step 6: Final answer
    x = 17,802.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.