Home / 10,065.40-15,107.70-8,606.20

Finding the Fourth Proportional to 10,065.40, 15,107.70 and 8,606.20

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Solution

The fourth proportional to 10,065.40, 15,107.70 and 8,606.20 is: 12,917.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,065.40 : 15,107.70 = 8,606.20 : x
  2. Step 2: Convert to fraction form
    10,065.40/15,107.70 = 8,606.20/x
  3. Step 3: Cross multiply
    10,065.40x = 15,107.70 × 8,606.20
  4. Step 4: Simplify right side
    10,065.40x = 130,019,887.74
  5. Step 5: Solve for x
    x = 130,019,887.74/10,065.40
  6. Step 6: Final answer
    x = 12,917.51

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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.