Home / 14,490.20-21,727.20-6,689.36

Finding the Fourth Proportional to 14,490.20, 21,727.20 and 6,689.36

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Solution

The fourth proportional to 14,490.20, 21,727.20 and 6,689.36 is: 10,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,490.20 : 21,727.20 = 6,689.36 : x
  2. Step 2: Convert to fraction form
    14,490.20/21,727.20 = 6,689.36/x
  3. Step 3: Cross multiply
    14,490.20x = 21,727.20 × 6,689.36
  4. Step 4: Simplify right side
    14,490.20x = 145,341,062.59
  5. Step 5: Solve for x
    x = 145,341,062.59/14,490.20
  6. Step 6: Final answer
    x = 10,030.30

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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.