Home / 15,030.33-20,742.47-8,315.85

Finding the Fourth Proportional to 15,030.33, 20,742.47 and 8,315.85

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Solution

The fourth proportional to 15,030.33, 20,742.47 and 8,315.85 is: 11,476.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.33 : 20,742.47 = 8,315.85 : x
  2. Step 2: Convert to fraction form
    15,030.33/20,742.47 = 8,315.85/x
  3. Step 3: Cross multiply
    15,030.33x = 20,742.47 × 8,315.85
  4. Step 4: Simplify right side
    15,030.33x = 172,491,204.27
  5. Step 5: Solve for x
    x = 172,491,204.27/15,030.33
  6. Step 6: Final answer
    x = 11,476.21

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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.