Home / 15,476.81-21,333.78-12,954.47

Finding the Fourth Proportional to 15,476.81, 21,333.78 and 12,954.47

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Solution

The fourth proportional to 15,476.81, 21,333.78 and 12,954.47 is: 17,856.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,476.81 : 21,333.78 = 12,954.47 : x
  2. Step 2: Convert to fraction form
    15,476.81/21,333.78 = 12,954.47/x
  3. Step 3: Cross multiply
    15,476.81x = 21,333.78 × 12,954.47
  4. Step 4: Simplify right side
    15,476.81x = 276,367,813.00
  5. Step 5: Solve for x
    x = 276,367,813.00/15,476.81
  6. Step 6: Final answer
    x = 17,856.90

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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.