Home / 15,660.60-23,431.98-10,989.72

Finding the Fourth Proportional to 15,660.60, 23,431.98 and 10,989.72

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Solution

The fourth proportional to 15,660.60, 23,431.98 and 10,989.72 is: 16,443.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.60 : 23,431.98 = 10,989.72 : x
  2. Step 2: Convert to fraction form
    15,660.60/23,431.98 = 10,989.72/x
  3. Step 3: Cross multiply
    15,660.60x = 23,431.98 × 10,989.72
  4. Step 4: Simplify right side
    15,660.60x = 257,510,899.25
  5. Step 5: Solve for x
    x = 257,510,899.25/15,660.60
  6. Step 6: Final answer
    x = 16,443.23

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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.