Home / 12,431.04-18,643.85-4,109.08

Finding the Fourth Proportional to 12,431.04, 18,643.85 and 4,109.08

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Solution

The fourth proportional to 12,431.04, 18,643.85 and 4,109.08 is: 6,162.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.04 : 18,643.85 = 4,109.08 : x
  2. Step 2: Convert to fraction form
    12,431.04/18,643.85 = 4,109.08/x
  3. Step 3: Cross multiply
    12,431.04x = 18,643.85 × 4,109.08
  4. Step 4: Simplify right side
    12,431.04x = 76,609,071.16
  5. Step 5: Solve for x
    x = 76,609,071.16/12,431.04
  6. Step 6: Final answer
    x = 6,162.72

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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.