Home / 14,320.78-21,376.53-13,265.56

Finding the Fourth Proportional to 14,320.78, 21,376.53 and 13,265.56

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Solution

The fourth proportional to 14,320.78, 21,376.53 and 13,265.56 is: 19,801.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,320.78 : 21,376.53 = 13,265.56 : x
  2. Step 2: Convert to fraction form
    14,320.78/21,376.53 = 13,265.56/x
  3. Step 3: Cross multiply
    14,320.78x = 21,376.53 × 13,265.56
  4. Step 4: Simplify right side
    14,320.78x = 283,571,468.10
  5. Step 5: Solve for x
    x = 283,571,468.10/14,320.78
  6. Step 6: Final answer
    x = 19,801.41

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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.