Home / 21,702.05-29,940.37-13,632.24

Finding the Fourth Proportional to 21,702.05, 29,940.37 and 13,632.24

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Solution

The fourth proportional to 21,702.05, 29,940.37 and 13,632.24 is: 18,807.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.05 : 29,940.37 = 13,632.24 : x
  2. Step 2: Convert to fraction form
    21,702.05/29,940.37 = 13,632.24/x
  3. Step 3: Cross multiply
    21,702.05x = 29,940.37 × 13,632.24
  4. Step 4: Simplify right side
    21,702.05x = 408,154,424.18
  5. Step 5: Solve for x
    x = 408,154,424.18/21,702.05
  6. Step 6: Final answer
    x = 18,807.19

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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.