Home / 13,059.15-18,021.57-7,090.77

Finding the Fourth Proportional to 13,059.15, 18,021.57 and 7,090.77

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Solution

The fourth proportional to 13,059.15, 18,021.57 and 7,090.77 is: 9,785.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,059.15 : 18,021.57 = 7,090.77 : x
  2. Step 2: Convert to fraction form
    13,059.15/18,021.57 = 7,090.77/x
  3. Step 3: Cross multiply
    13,059.15x = 18,021.57 × 7,090.77
  4. Step 4: Simplify right side
    13,059.15x = 127,786,807.91
  5. Step 5: Solve for x
    x = 127,786,807.91/13,059.15
  6. Step 6: Final answer
    x = 9,785.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.