Home / 15,751.13-21,739.77-9,041.36

Finding the Fourth Proportional to 15,751.13, 21,739.77 and 9,041.36

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Solution

The fourth proportional to 15,751.13, 21,739.77 and 9,041.36 is: 12,478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,751.13 : 21,739.77 = 9,041.36 : x
  2. Step 2: Convert to fraction form
    15,751.13/21,739.77 = 9,041.36/x
  3. Step 3: Cross multiply
    15,751.13x = 21,739.77 × 9,041.36
  4. Step 4: Simplify right side
    15,751.13x = 196,556,978.19
  5. Step 5: Solve for x
    x = 196,556,978.19/15,751.13
  6. Step 6: Final answer
    x = 12,478.92

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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.