Home / 21,125.25-29,152.89-11,695.23

Finding the Fourth Proportional to 21,125.25, 29,152.89 and 11,695.23

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Solution

The fourth proportional to 21,125.25, 29,152.89 and 11,695.23 is: 16,139.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.25 : 29,152.89 = 11,695.23 : x
  2. Step 2: Convert to fraction form
    21,125.25/29,152.89 = 11,695.23/x
  3. Step 3: Cross multiply
    21,125.25x = 29,152.89 × 11,695.23
  4. Step 4: Simplify right side
    21,125.25x = 340,949,753.71
  5. Step 5: Solve for x
    x = 340,949,753.71/21,125.25
  6. Step 6: Final answer
    x = 16,139.44

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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.