Home / 18,164.12-25,066.78-9,988.07

Finding the Fourth Proportional to 18,164.12, 25,066.78 and 9,988.07

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Solution

The fourth proportional to 18,164.12, 25,066.78 and 9,988.07 is: 13,783.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,164.12 : 25,066.78 = 9,988.07 : x
  2. Step 2: Convert to fraction form
    18,164.12/25,066.78 = 9,988.07/x
  3. Step 3: Cross multiply
    18,164.12x = 25,066.78 × 9,988.07
  4. Step 4: Simplify right side
    18,164.12x = 250,368,603.01
  5. Step 5: Solve for x
    x = 250,368,603.01/18,164.12
  6. Step 6: Final answer
    x = 13,783.69

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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.