Home / 10,878.70-15,012.58-6,629.76

Finding the Fourth Proportional to 10,878.70, 15,012.58 and 6,629.76

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Solution

The fourth proportional to 10,878.70, 15,012.58 and 6,629.76 is: 9,149.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.70 : 15,012.58 = 6,629.76 : x
  2. Step 2: Convert to fraction form
    10,878.70/15,012.58 = 6,629.76/x
  3. Step 3: Cross multiply
    10,878.70x = 15,012.58 × 6,629.76
  4. Step 4: Simplify right side
    10,878.70x = 99,529,802.38
  5. Step 5: Solve for x
    x = 99,529,802.38/10,878.70
  6. Step 6: Final answer
    x = 9,149.05

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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.