Home / 10,879.40-15,018.26-6,630.54

Finding the Fourth Proportional to 10,879.40, 15,018.26 and 6,630.54

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Solution

The fourth proportional to 10,879.40, 15,018.26 and 6,630.54 is: 9,153.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.40 : 15,018.26 = 6,630.54 : x
  2. Step 2: Convert to fraction form
    10,879.40/15,018.26 = 6,630.54/x
  3. Step 3: Cross multiply
    10,879.40x = 15,018.26 × 6,630.54
  4. Step 4: Simplify right side
    10,879.40x = 99,579,140.51
  5. Step 5: Solve for x
    x = 99,579,140.51/10,879.40
  6. Step 6: Final answer
    x = 9,153.00

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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.