Home / 10,045.89-13,865.40-6,688.85

Finding the Fourth Proportional to 10,045.89, 13,865.40 and 6,688.85

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Solution

The fourth proportional to 10,045.89, 13,865.40 and 6,688.85 is: 9,231.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,045.89 : 13,865.40 = 6,688.85 : x
  2. Step 2: Convert to fraction form
    10,045.89/13,865.40 = 6,688.85/x
  3. Step 3: Cross multiply
    10,045.89x = 13,865.40 × 6,688.85
  4. Step 4: Simplify right side
    10,045.89x = 92,743,511.46
  5. Step 5: Solve for x
    x = 92,743,511.46/10,045.89
  6. Step 6: Final answer
    x = 9,231.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.