Home / 13,785.60-20,646.08-10,078.48

Finding the Fourth Proportional to 13,785.60, 20,646.08 and 10,078.48

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Solution

The fourth proportional to 13,785.60, 20,646.08 and 10,078.48 is: 15,094.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.60 : 20,646.08 = 10,078.48 : x
  2. Step 2: Convert to fraction form
    13,785.60/20,646.08 = 10,078.48/x
  3. Step 3: Cross multiply
    13,785.60x = 20,646.08 × 10,078.48
  4. Step 4: Simplify right side
    13,785.60x = 208,081,104.36
  5. Step 5: Solve for x
    x = 208,081,104.36/13,785.60
  6. Step 6: Final answer
    x = 15,094.09

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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.