Home / 15,729.87-23,606.60-9,815.40

Finding the Fourth Proportional to 15,729.87, 23,606.60 and 9,815.40

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Solution

The fourth proportional to 15,729.87, 23,606.60 and 9,815.40 is: 14,730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,729.87 : 23,606.60 = 9,815.40 : x
  2. Step 2: Convert to fraction form
    15,729.87/23,606.60 = 9,815.40/x
  3. Step 3: Cross multiply
    15,729.87x = 23,606.60 × 9,815.40
  4. Step 4: Simplify right side
    15,729.87x = 231,708,172.56
  5. Step 5: Solve for x
    x = 231,708,172.56/15,729.87
  6. Step 6: Final answer
    x = 14,730.45

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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.