Home / 25,720.80-35,491.62-14,390.91

Finding the Fourth Proportional to 25,720.80, 35,491.62 and 14,390.91

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Solution

The fourth proportional to 25,720.80, 35,491.62 and 14,390.91 is: 19,857.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,720.80 : 35,491.62 = 14,390.91 : x
  2. Step 2: Convert to fraction form
    25,720.80/35,491.62 = 14,390.91/x
  3. Step 3: Cross multiply
    25,720.80x = 35,491.62 × 14,390.91
  4. Step 4: Simplify right side
    25,720.80x = 510,756,709.17
  5. Step 5: Solve for x
    x = 510,756,709.17/25,720.80
  6. Step 6: Final answer
    x = 19,857.73

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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.