Home / 18,316.94-25,280.37-15,331.68

Finding the Fourth Proportional to 18,316.94, 25,280.37 and 15,331.68

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Solution

The fourth proportional to 18,316.94, 25,280.37 and 15,331.68 is: 21,160.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,316.94 : 25,280.37 = 15,331.68 : x
  2. Step 2: Convert to fraction form
    18,316.94/25,280.37 = 15,331.68/x
  3. Step 3: Cross multiply
    18,316.94x = 25,280.37 × 15,331.68
  4. Step 4: Simplify right side
    18,316.94x = 387,590,543.12
  5. Step 5: Solve for x
    x = 387,590,543.12/18,316.94
  6. Step 6: Final answer
    x = 21,160.23

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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.