Home / 10,895.85-15,037.29-6,420.99

Finding the Fourth Proportional to 10,895.85, 15,037.29 and 6,420.99

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Solution

The fourth proportional to 10,895.85, 15,037.29 and 6,420.99 is: 8,861.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,895.85 : 15,037.29 = 6,420.99 : x
  2. Step 2: Convert to fraction form
    10,895.85/15,037.29 = 6,420.99/x
  3. Step 3: Cross multiply
    10,895.85x = 15,037.29 × 6,420.99
  4. Step 4: Simplify right side
    10,895.85x = 96,554,288.72
  5. Step 5: Solve for x
    x = 96,554,288.72/10,895.85
  6. Step 6: Final answer
    x = 8,861.57

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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.