Home / 14,007.20-21,010.80-13,359.20

Finding the Fourth Proportional to 14,007.20, 21,010.80 and 13,359.20

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Solution

The fourth proportional to 14,007.20, 21,010.80 and 13,359.20 is: 20,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,007.20 : 21,010.80 = 13,359.20 : x
  2. Step 2: Convert to fraction form
    14,007.20/21,010.80 = 13,359.20/x
  3. Step 3: Cross multiply
    14,007.20x = 21,010.80 × 13,359.20
  4. Step 4: Simplify right side
    14,007.20x = 280,687,479.36
  5. Step 5: Solve for x
    x = 280,687,479.36/14,007.20
  6. Step 6: Final answer
    x = 20,038.80

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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.