Home / 21,979.27-30,323.93-12,417.76

Finding the Fourth Proportional to 21,979.27, 30,323.93 and 12,417.76

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Solution

The fourth proportional to 21,979.27, 30,323.93 and 12,417.76 is: 17,132.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.27 : 30,323.93 = 12,417.76 : x
  2. Step 2: Convert to fraction form
    21,979.27/30,323.93 = 12,417.76/x
  3. Step 3: Cross multiply
    21,979.27x = 30,323.93 × 12,417.76
  4. Step 4: Simplify right side
    21,979.27x = 376,555,285.00
  5. Step 5: Solve for x
    x = 376,555,285.00/21,979.27
  6. Step 6: Final answer
    x = 17,132.29

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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.