Home / 25,490.82-38,186.70-12,649.74

Finding the Fourth Proportional to 25,490.82, 38,186.70 and 12,649.74

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Solution

The fourth proportional to 25,490.82, 38,186.70 and 12,649.74 is: 18,950.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,490.82 : 38,186.70 = 12,649.74 : x
  2. Step 2: Convert to fraction form
    25,490.82/38,186.70 = 12,649.74/x
  3. Step 3: Cross multiply
    25,490.82x = 38,186.70 × 12,649.74
  4. Step 4: Simplify right side
    25,490.82x = 483,051,826.46
  5. Step 5: Solve for x
    x = 483,051,826.46/25,490.82
  6. Step 6: Final answer
    x = 18,950.03

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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.