Home / 10,890.12-15,030.02-6,111.96

Finding the Fourth Proportional to 10,890.12, 15,030.02 and 6,111.96

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Solution

The fourth proportional to 10,890.12, 15,030.02 and 6,111.96 is: 8,435.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.12 : 15,030.02 = 6,111.96 : x
  2. Step 2: Convert to fraction form
    10,890.12/15,030.02 = 6,111.96/x
  3. Step 3: Cross multiply
    10,890.12x = 15,030.02 × 6,111.96
  4. Step 4: Simplify right side
    10,890.12x = 91,862,881.04
  5. Step 5: Solve for x
    x = 91,862,881.04/10,890.12
  6. Step 6: Final answer
    x = 8,435.43

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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.