Home / 20,424.15-28,185.26-11,349.47

Finding the Fourth Proportional to 20,424.15, 28,185.26 and 11,349.47

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Solution

The fourth proportional to 20,424.15, 28,185.26 and 11,349.47 is: 15,662.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.15 : 28,185.26 = 11,349.47 : x
  2. Step 2: Convert to fraction form
    20,424.15/28,185.26 = 11,349.47/x
  3. Step 3: Cross multiply
    20,424.15x = 28,185.26 × 11,349.47
  4. Step 4: Simplify right side
    20,424.15x = 319,887,762.81
  5. Step 5: Solve for x
    x = 319,887,762.81/20,424.15
  6. Step 6: Final answer
    x = 15,662.23

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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.