Home / 10,890.61-15,030.27-6,111.85

Finding the Fourth Proportional to 10,890.61, 15,030.27 and 6,111.85

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Solution

The fourth proportional to 10,890.61, 15,030.27 and 6,111.85 is: 8,435.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.61 : 15,030.27 = 6,111.85 : x
  2. Step 2: Convert to fraction form
    10,890.61/15,030.27 = 6,111.85/x
  3. Step 3: Cross multiply
    10,890.61x = 15,030.27 × 6,111.85
  4. Step 4: Simplify right side
    10,890.61x = 91,862,755.70
  5. Step 5: Solve for x
    x = 91,862,755.70/10,890.61
  6. Step 6: Final answer
    x = 8,435.04

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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.