Home / 15,785.40-23,678.10-14,172.60

Finding the Fourth Proportional to 15,785.40, 23,678.10 and 14,172.60

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Solution

The fourth proportional to 15,785.40, 23,678.10 and 14,172.60 is: 21,258.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,785.40 : 23,678.10 = 14,172.60 : x
  2. Step 2: Convert to fraction form
    15,785.40/23,678.10 = 14,172.60/x
  3. Step 3: Cross multiply
    15,785.40x = 23,678.10 × 14,172.60
  4. Step 4: Simplify right side
    15,785.40x = 335,580,240.06
  5. Step 5: Solve for x
    x = 335,580,240.06/15,785.40
  6. Step 6: Final answer
    x = 21,258.90

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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.