Home / 14,171.28-21,351.47-12,838.74

Finding the Fourth Proportional to 14,171.28, 21,351.47 and 12,838.74

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Solution

The fourth proportional to 14,171.28, 21,351.47 and 12,838.74 is: 19,343.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,171.28 : 21,351.47 = 12,838.74 : x
  2. Step 2: Convert to fraction form
    14,171.28/21,351.47 = 12,838.74/x
  3. Step 3: Cross multiply
    14,171.28x = 21,351.47 × 12,838.74
  4. Step 4: Simplify right side
    14,171.28x = 274,125,971.95
  5. Step 5: Solve for x
    x = 274,125,971.95/14,171.28
  6. Step 6: Final answer
    x = 19,343.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.