Home / 20,509.06-28,302.52-11,077.63

Finding the Fourth Proportional to 20,509.06, 28,302.52 and 11,077.63

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Solution

The fourth proportional to 20,509.06, 28,302.52 and 11,077.63 is: 15,287.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509.06 : 28,302.52 = 11,077.63 : x
  2. Step 2: Convert to fraction form
    20,509.06/28,302.52 = 11,077.63/x
  3. Step 3: Cross multiply
    20,509.06x = 28,302.52 × 11,077.63
  4. Step 4: Simplify right side
    20,509.06x = 313,524,844.63
  5. Step 5: Solve for x
    x = 313,524,844.63/20,509.06
  6. Step 6: Final answer
    x = 15,287.14

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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.