Home / 21,084.39-31,631.78-14,856.56

Finding the Fourth Proportional to 21,084.39, 31,631.78 and 14,856.56

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Solution

The fourth proportional to 21,084.39, 31,631.78 and 14,856.56 is: 22,288.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.39 : 31,631.78 = 14,856.56 : x
  2. Step 2: Convert to fraction form
    21,084.39/31,631.78 = 14,856.56/x
  3. Step 3: Cross multiply
    21,084.39x = 31,631.78 × 14,856.56
  4. Step 4: Simplify right side
    21,084.39x = 469,939,460.84
  5. Step 5: Solve for x
    x = 469,939,460.84/21,084.39
  6. Step 6: Final answer
    x = 22,288.50

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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.