Home / 14,490.64-19,986.76-13,299.49

Finding the Fourth Proportional to 14,490.64, 19,986.76 and 13,299.49

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Solution

The fourth proportional to 14,490.64, 19,986.76 and 13,299.49 is: 18,343.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,490.64 : 19,986.76 = 13,299.49 : x
  2. Step 2: Convert to fraction form
    14,490.64/19,986.76 = 13,299.49/x
  3. Step 3: Cross multiply
    14,490.64x = 19,986.76 × 13,299.49
  4. Step 4: Simplify right side
    14,490.64x = 265,813,714.75
  5. Step 5: Solve for x
    x = 265,813,714.75/14,490.64
  6. Step 6: Final answer
    x = 18,343.82

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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.