Home / 15,030-20,741.06-8,315.71

Finding the Fourth Proportional to 15,030, 20,741.06 and 8,315.71

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Solution

The fourth proportional to 15,030, 20,741.06 and 8,315.71 is: 11,475.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030 : 20,741.06 = 8,315.71 : x
  2. Step 2: Convert to fraction form
    15,030/20,741.06 = 8,315.71/x
  3. Step 3: Cross multiply
    15,030x = 20,741.06 × 8,315.71
  4. Step 4: Simplify right side
    15,030x = 172,476,608.99
  5. Step 5: Solve for x
    x = 172,476,608.99/15,030
  6. Step 6: Final answer
    x = 11,475.49

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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.