Home / 13,421.63-20,125.59-5,095.31

Finding the Fourth Proportional to 13,421.63, 20,125.59 and 5,095.31

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Solution

The fourth proportional to 13,421.63, 20,125.59 and 5,095.31 is: 7,640.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.63 : 20,125.59 = 5,095.31 : x
  2. Step 2: Convert to fraction form
    13,421.63/20,125.59 = 5,095.31/x
  3. Step 3: Cross multiply
    13,421.63x = 20,125.59 × 5,095.31
  4. Step 4: Simplify right side
    13,421.63x = 102,546,019.35
  5. Step 5: Solve for x
    x = 102,546,019.35/13,421.63
  6. Step 6: Final answer
    x = 7,640.36

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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.