Home / 12,315.27-18,459.23-9,383.91

Finding the Fourth Proportional to 12,315.27, 18,459.23 and 9,383.91

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Solution

The fourth proportional to 12,315.27, 18,459.23 and 9,383.91 is: 14,065.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.27 : 18,459.23 = 9,383.91 : x
  2. Step 2: Convert to fraction form
    12,315.27/18,459.23 = 9,383.91/x
  3. Step 3: Cross multiply
    12,315.27x = 18,459.23 × 9,383.91
  4. Step 4: Simplify right side
    12,315.27x = 173,219,706.07
  5. Step 5: Solve for x
    x = 173,219,706.07/12,315.27
  6. Step 6: Final answer
    x = 14,065.44

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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.