Home / 18,323.31-25,222.28-15,813.39

Finding the Fourth Proportional to 18,323.31, 25,222.28 and 15,813.39

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Solution

The fourth proportional to 18,323.31, 25,222.28 and 15,813.39 is: 21,767.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,323.31 : 25,222.28 = 15,813.39 : x
  2. Step 2: Convert to fraction form
    18,323.31/25,222.28 = 15,813.39/x
  3. Step 3: Cross multiply
    18,323.31x = 25,222.28 × 15,813.39
  4. Step 4: Simplify right side
    18,323.31x = 398,849,671.26
  5. Step 5: Solve for x
    x = 398,849,671.26/18,323.31
  6. Step 6: Final answer
    x = 21,767.34

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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.