Home / 10,005.70-15,008.22-2,985.76

Finding the Fourth Proportional to 10,005.70, 15,008.22 and 2,985.76

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Solution

The fourth proportional to 10,005.70, 15,008.22 and 2,985.76 is: 4,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,005.70 : 15,008.22 = 2,985.76 : x
  2. Step 2: Convert to fraction form
    10,005.70/15,008.22 = 2,985.76/x
  3. Step 3: Cross multiply
    10,005.70x = 15,008.22 × 2,985.76
  4. Step 4: Simplify right side
    10,005.70x = 44,810,942.95
  5. Step 5: Solve for x
    x = 44,810,942.95/10,005.70
  6. Step 6: Final answer
    x = 4,478.54

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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.