Home / 12,128.67-18,192.96-4,337.46

Finding the Fourth Proportional to 12,128.67, 18,192.96 and 4,337.46

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Solution

The fourth proportional to 12,128.67, 18,192.96 and 4,337.46 is: 6,506.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.67 : 18,192.96 = 4,337.46 : x
  2. Step 2: Convert to fraction form
    12,128.67/18,192.96 = 4,337.46/x
  3. Step 3: Cross multiply
    12,128.67x = 18,192.96 × 4,337.46
  4. Step 4: Simplify right side
    12,128.67x = 78,911,236.28
  5. Step 5: Solve for x
    x = 78,911,236.28/12,128.67
  6. Step 6: Final answer
    x = 6,506.17

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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.