Home / 14,112.86-21,150.70-7,875.80

Finding the Fourth Proportional to 14,112.86, 21,150.70 and 7,875.80

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Solution

The fourth proportional to 14,112.86, 21,150.70 and 7,875.80 is: 11,803.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,112.86 : 21,150.70 = 7,875.80 : x
  2. Step 2: Convert to fraction form
    14,112.86/21,150.70 = 7,875.80/x
  3. Step 3: Cross multiply
    14,112.86x = 21,150.70 × 7,875.80
  4. Step 4: Simplify right side
    14,112.86x = 166,578,683.06
  5. Step 5: Solve for x
    x = 166,578,683.06/14,112.86
  6. Step 6: Final answer
    x = 11,803.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.