Home / 13,090.72-19,582.08-8,403.52

Finding the Fourth Proportional to 13,090.72, 19,582.08 and 8,403.52

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Solution

The fourth proportional to 13,090.72, 19,582.08 and 8,403.52 is: 12,570.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.72 : 19,582.08 = 8,403.52 : x
  2. Step 2: Convert to fraction form
    13,090.72/19,582.08 = 8,403.52/x
  3. Step 3: Cross multiply
    13,090.72x = 19,582.08 × 8,403.52
  4. Step 4: Simplify right side
    13,090.72x = 164,558,400.92
  5. Step 5: Solve for x
    x = 164,558,400.92/13,090.72
  6. Step 6: Final answer
    x = 12,570.61

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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.