Home / 28,218.86-38,931.98-16,285.22

Finding the Fourth Proportional to 28,218.86, 38,931.98 and 16,285.22

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Solution

The fourth proportional to 28,218.86, 38,931.98 and 16,285.22 is: 22,467.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.86 : 38,931.98 = 16,285.22 : x
  2. Step 2: Convert to fraction form
    28,218.86/38,931.98 = 16,285.22/x
  3. Step 3: Cross multiply
    28,218.86x = 38,931.98 × 16,285.22
  4. Step 4: Simplify right side
    28,218.86x = 634,015,859.34
  5. Step 5: Solve for x
    x = 634,015,859.34/28,218.86
  6. Step 6: Final answer
    x = 22,467.81

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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.