Home / 14,145.86-21,218.90-4,285.91

Finding the Fourth Proportional to 14,145.86, 21,218.90 and 4,285.91

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Solution

The fourth proportional to 14,145.86, 21,218.90 and 4,285.91 is: 6,428.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.86 : 21,218.90 = 4,285.91 : x
  2. Step 2: Convert to fraction form
    14,145.86/21,218.90 = 4,285.91/x
  3. Step 3: Cross multiply
    14,145.86x = 21,218.90 × 4,285.91
  4. Step 4: Simplify right side
    14,145.86x = 90,942,200.32
  5. Step 5: Solve for x
    x = 90,942,200.32/14,145.86
  6. Step 6: Final answer
    x = 6,428.89

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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.