Home / 21,139.92-29,106.70-17,946.60

Finding the Fourth Proportional to 21,139.92, 29,106.70 and 17,946.60

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Solution

The fourth proportional to 21,139.92, 29,106.70 and 17,946.60 is: 24,709.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139.92 : 29,106.70 = 17,946.60 : x
  2. Step 2: Convert to fraction form
    21,139.92/29,106.70 = 17,946.60/x
  3. Step 3: Cross multiply
    21,139.92x = 29,106.70 × 17,946.60
  4. Step 4: Simplify right side
    21,139.92x = 522,366,302.22
  5. Step 5: Solve for x
    x = 522,366,302.22/21,139.92
  6. Step 6: Final answer
    x = 24,709.95

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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.