Home / 10,931.67-15,085.07-6,453.79

Finding the Fourth Proportional to 10,931.67, 15,085.07 and 6,453.79

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Solution

The fourth proportional to 10,931.67, 15,085.07 and 6,453.79 is: 8,905.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.67 : 15,085.07 = 6,453.79 : x
  2. Step 2: Convert to fraction form
    10,931.67/15,085.07 = 6,453.79/x
  3. Step 3: Cross multiply
    10,931.67x = 15,085.07 × 6,453.79
  4. Step 4: Simplify right side
    10,931.67x = 97,355,873.92
  5. Step 5: Solve for x
    x = 97,355,873.92/10,931.67
  6. Step 6: Final answer
    x = 8,905.86

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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.