Home / 25,807.83-38,686.21-12,456.19

Finding the Fourth Proportional to 25,807.83, 38,686.21 and 12,456.19

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Solution

The fourth proportional to 25,807.83, 38,686.21 and 12,456.19 is: 18,671.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,807.83 : 38,686.21 = 12,456.19 : x
  2. Step 2: Convert to fraction form
    25,807.83/38,686.21 = 12,456.19/x
  3. Step 3: Cross multiply
    25,807.83x = 38,686.21 × 12,456.19
  4. Step 4: Simplify right side
    25,807.83x = 481,882,782.14
  5. Step 5: Solve for x
    x = 481,882,782.14/25,807.83
  6. Step 6: Final answer
    x = 18,671.96

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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.