Home / 20,670.53-28,525.17-11,239.08

Finding the Fourth Proportional to 20,670.53, 28,525.17 and 11,239.08

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Solution

The fourth proportional to 20,670.53, 28,525.17 and 11,239.08 is: 15,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.53 : 28,525.17 = 11,239.08 : x
  2. Step 2: Convert to fraction form
    20,670.53/28,525.17 = 11,239.08/x
  3. Step 3: Cross multiply
    20,670.53x = 28,525.17 × 11,239.08
  4. Step 4: Simplify right side
    20,670.53x = 320,596,667.64
  5. Step 5: Solve for x
    x = 320,596,667.64/20,670.53
  6. Step 6: Final answer
    x = 15,509.85

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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.