Home / 10,328.88-15,491.60-4,781.76

Finding the Fourth Proportional to 10,328.88, 15,491.60 and 4,781.76

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Solution

The fourth proportional to 10,328.88, 15,491.60 and 4,781.76 is: 7,171.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,328.88 : 15,491.60 = 4,781.76 : x
  2. Step 2: Convert to fraction form
    10,328.88/15,491.60 = 4,781.76/x
  3. Step 3: Cross multiply
    10,328.88x = 15,491.60 × 4,781.76
  4. Step 4: Simplify right side
    10,328.88x = 74,077,113.22
  5. Step 5: Solve for x
    x = 74,077,113.22/10,328.88
  6. Step 6: Final answer
    x = 7,171.84

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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.