Home / 25,428.99-38,145.17-8,790.63

Finding the Fourth Proportional to 25,428.99, 38,145.17 and 8,790.63

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Solution

The fourth proportional to 25,428.99, 38,145.17 and 8,790.63 is: 13,186.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,428.99 : 38,145.17 = 8,790.63 : x
  2. Step 2: Convert to fraction form
    25,428.99/38,145.17 = 8,790.63/x
  3. Step 3: Cross multiply
    25,428.99x = 38,145.17 × 8,790.63
  4. Step 4: Simplify right side
    25,428.99x = 335,320,031.80
  5. Step 5: Solve for x
    x = 335,320,031.80/25,428.99
  6. Step 6: Final answer
    x = 13,186.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.