Home / 12,121.59-18,182.40-4,331.01

Finding the Fourth Proportional to 12,121.59, 18,182.40 and 4,331.01

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Solution

The fourth proportional to 12,121.59, 18,182.40 and 4,331.01 is: 6,496.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.59 : 18,182.40 = 4,331.01 : x
  2. Step 2: Convert to fraction form
    12,121.59/18,182.40 = 4,331.01/x
  3. Step 3: Cross multiply
    12,121.59x = 18,182.40 × 4,331.01
  4. Step 4: Simplify right side
    12,121.59x = 78,748,156.22
  5. Step 5: Solve for x
    x = 78,748,156.22/12,121.59
  6. Step 6: Final answer
    x = 6,496.52

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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.