Home / 18,231.95-27,331.74-7,130.84

Finding the Fourth Proportional to 18,231.95, 27,331.74 and 7,130.84

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Solution

The fourth proportional to 18,231.95, 27,331.74 and 7,130.84 is: 10,689.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.95 : 27,331.74 = 7,130.84 : x
  2. Step 2: Convert to fraction form
    18,231.95/27,331.74 = 7,130.84/x
  3. Step 3: Cross multiply
    18,231.95x = 27,331.74 × 7,130.84
  4. Step 4: Simplify right side
    18,231.95x = 194,898,264.86
  5. Step 5: Solve for x
    x = 194,898,264.86/18,231.95
  6. Step 6: Final answer
    x = 10,689.93

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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.