Home / 21,750.36-30,015.28-11,814.36

Finding the Fourth Proportional to 21,750.36, 30,015.28 and 11,814.36

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Solution

The fourth proportional to 21,750.36, 30,015.28 and 11,814.36 is: 16,303.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,750.36 : 30,015.28 = 11,814.36 : x
  2. Step 2: Convert to fraction form
    21,750.36/30,015.28 = 11,814.36/x
  3. Step 3: Cross multiply
    21,750.36x = 30,015.28 × 11,814.36
  4. Step 4: Simplify right side
    21,750.36x = 354,611,323.42
  5. Step 5: Solve for x
    x = 354,611,323.42/21,750.36
  6. Step 6: Final answer
    x = 16,303.70

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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.