Home / 18,353.31-25,316.13-15,279.33

Finding the Fourth Proportional to 18,353.31, 25,316.13 and 15,279.33

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Solution

The fourth proportional to 18,353.31, 25,316.13 and 15,279.33 is: 21,075.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,353.31 : 25,316.13 = 15,279.33 : x
  2. Step 2: Convert to fraction form
    18,353.31/25,316.13 = 15,279.33/x
  3. Step 3: Cross multiply
    18,353.31x = 25,316.13 × 15,279.33
  4. Step 4: Simplify right side
    18,353.31x = 386,813,504.59
  5. Step 5: Solve for x
    x = 386,813,504.59/18,353.31
  6. Step 6: Final answer
    x = 21,075.95

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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.