Home / 21,924.36-30,263.49-12,979.53

Finding the Fourth Proportional to 21,924.36, 30,263.49 and 12,979.53

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Solution

The fourth proportional to 21,924.36, 30,263.49 and 12,979.53 is: 17,916.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,924.36 : 30,263.49 = 12,979.53 : x
  2. Step 2: Convert to fraction form
    21,924.36/30,263.49 = 12,979.53/x
  3. Step 3: Cross multiply
    21,924.36x = 30,263.49 × 12,979.53
  4. Step 4: Simplify right side
    21,924.36x = 392,805,876.36
  5. Step 5: Solve for x
    x = 392,805,876.36/21,924.36
  6. Step 6: Final answer
    x = 17,916.41

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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.