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Finding the Fourth Proportional to 15,918.14, 23,881.98 and 6,425.57

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Solution

The fourth proportional to 15,918.14, 23,881.98 and 6,425.57 is: 9,640.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.14 : 23,881.98 = 6,425.57 : x
  2. Step 2: Convert to fraction form
    15,918.14/23,881.98 = 6,425.57/x
  3. Step 3: Cross multiply
    15,918.14x = 23,881.98 × 6,425.57
  4. Step 4: Simplify right side
    15,918.14x = 153,455,334.23
  5. Step 5: Solve for x
    x = 153,455,334.23/15,918.14
  6. Step 6: Final answer
    x = 9,640.28

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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.