Home / 12,143.12-18,214.67-4,357.40

Finding the Fourth Proportional to 12,143.12, 18,214.67 and 4,357.40

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Solution

The fourth proportional to 12,143.12, 18,214.67 and 4,357.40 is: 6,536.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.12 : 18,214.67 = 4,357.40 : x
  2. Step 2: Convert to fraction form
    12,143.12/18,214.67 = 4,357.40/x
  3. Step 3: Cross multiply
    12,143.12x = 18,214.67 × 4,357.40
  4. Step 4: Simplify right side
    12,143.12x = 79,368,603.06
  5. Step 5: Solve for x
    x = 79,368,603.06/12,143.12
  6. Step 6: Final answer
    x = 6,536.10

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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.