Home / 18,618.18-27,931.40-6,142.06

Finding the Fourth Proportional to 18,618.18, 27,931.40 and 6,142.06

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Solution

The fourth proportional to 18,618.18, 27,931.40 and 6,142.06 is: 9,214.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.18 : 27,931.40 = 6,142.06 : x
  2. Step 2: Convert to fraction form
    18,618.18/27,931.40 = 6,142.06/x
  3. Step 3: Cross multiply
    18,618.18x = 27,931.40 × 6,142.06
  4. Step 4: Simplify right side
    18,618.18x = 171,556,334.68
  5. Step 5: Solve for x
    x = 171,556,334.68/18,618.18
  6. Step 6: Final answer
    x = 9,214.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.