Home / 14,321.78-21,378.02-13,266.56

Finding the Fourth Proportional to 14,321.78, 21,378.02 and 13,266.56

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Solution

The fourth proportional to 14,321.78, 21,378.02 and 13,266.56 is: 19,802.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,321.78 : 21,378.02 = 13,266.56 : x
  2. Step 2: Convert to fraction form
    14,321.78/21,378.02 = 13,266.56/x
  3. Step 3: Cross multiply
    14,321.78x = 21,378.02 × 13,266.56
  4. Step 4: Simplify right side
    14,321.78x = 283,612,785.01
  5. Step 5: Solve for x
    x = 283,612,785.01/14,321.78
  6. Step 6: Final answer
    x = 19,802.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.