Home / 21,929.76-30,263.05-11,858.18

Finding the Fourth Proportional to 21,929.76, 30,263.05 and 11,858.18

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Solution

The fourth proportional to 21,929.76, 30,263.05 and 11,858.18 is: 16,364.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.76 : 30,263.05 = 11,858.18 : x
  2. Step 2: Convert to fraction form
    21,929.76/30,263.05 = 11,858.18/x
  3. Step 3: Cross multiply
    21,929.76x = 30,263.05 × 11,858.18
  4. Step 4: Simplify right side
    21,929.76x = 358,864,694.25
  5. Step 5: Solve for x
    x = 358,864,694.25/21,929.76
  6. Step 6: Final answer
    x = 16,364.28

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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.