Home / 14,002.80-21,008.28-4,142.31

Finding the Fourth Proportional to 14,002.80, 21,008.28 and 4,142.31

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Solution

The fourth proportional to 14,002.80, 21,008.28 and 4,142.31 is: 6,214.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,002.80 : 21,008.28 = 4,142.31 : x
  2. Step 2: Convert to fraction form
    14,002.80/21,008.28 = 4,142.31/x
  3. Step 3: Cross multiply
    14,002.80x = 21,008.28 × 4,142.31
  4. Step 4: Simplify right side
    14,002.80x = 87,022,808.33
  5. Step 5: Solve for x
    x = 87,022,808.33/14,002.80
  6. Step 6: Final answer
    x = 6,214.67

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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.