Home / 11,009.40-16,499.70-4,430.20

Finding the Fourth Proportional to 11,009.40, 16,499.70 and 4,430.20

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Solution

The fourth proportional to 11,009.40, 16,499.70 and 4,430.20 is: 6,639.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,009.40 : 16,499.70 = 4,430.20 : x
  2. Step 2: Convert to fraction form
    11,009.40/16,499.70 = 4,430.20/x
  3. Step 3: Cross multiply
    11,009.40x = 16,499.70 × 4,430.20
  4. Step 4: Simplify right side
    11,009.40x = 73,096,970.94
  5. Step 5: Solve for x
    x = 73,096,970.94/11,009.40
  6. Step 6: Final answer
    x = 6,639.51

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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.