Home / 10,917.81-15,065.88-6,441.75

Finding the Fourth Proportional to 10,917.81, 15,065.88 and 6,441.75

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Solution

The fourth proportional to 10,917.81, 15,065.88 and 6,441.75 is: 8,889.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,917.81 : 15,065.88 = 6,441.75 : x
  2. Step 2: Convert to fraction form
    10,917.81/15,065.88 = 6,441.75/x
  3. Step 3: Cross multiply
    10,917.81x = 15,065.88 × 6,441.75
  4. Step 4: Simplify right side
    10,917.81x = 97,050,632.49
  5. Step 5: Solve for x
    x = 97,050,632.49/10,917.81
  6. Step 6: Final answer
    x = 8,889.20

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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.