Home / 12,459.42-18,689.08-4,140.06

Finding the Fourth Proportional to 12,459.42, 18,689.08 and 4,140.06

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Solution

The fourth proportional to 12,459.42, 18,689.08 and 4,140.06 is: 6,210.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.42 : 18,689.08 = 4,140.06 : x
  2. Step 2: Convert to fraction form
    12,459.42/18,689.08 = 4,140.06/x
  3. Step 3: Cross multiply
    12,459.42x = 18,689.08 × 4,140.06
  4. Step 4: Simplify right side
    12,459.42x = 77,373,912.54
  5. Step 5: Solve for x
    x = 77,373,912.54/12,459.42
  6. Step 6: Final answer
    x = 6,210.07

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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.