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Finding the Fourth Proportional to 15,980.88, 23,907.08 and 13,812.88

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Solution

The fourth proportional to 15,980.88, 23,907.08 and 13,812.88 is: 20,663.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,980.88 : 23,907.08 = 13,812.88 : x
  2. Step 2: Convert to fraction form
    15,980.88/23,907.08 = 13,812.88/x
  3. Step 3: Cross multiply
    15,980.88x = 23,907.08 × 13,812.88
  4. Step 4: Simplify right side
    15,980.88x = 330,225,627.19
  5. Step 5: Solve for x
    x = 330,225,627.19/15,980.88
  6. Step 6: Final answer
    x = 20,663.79

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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.