Home / 18,725.40-25,834.79-12,355.16

Finding the Fourth Proportional to 18,725.40, 25,834.79 and 12,355.16

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Solution

The fourth proportional to 18,725.40, 25,834.79 and 12,355.16 is: 17,045.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.40 : 25,834.79 = 12,355.16 : x
  2. Step 2: Convert to fraction form
    18,725.40/25,834.79 = 12,355.16/x
  3. Step 3: Cross multiply
    18,725.40x = 25,834.79 × 12,355.16
  4. Step 4: Simplify right side
    18,725.40x = 319,192,773.07
  5. Step 5: Solve for x
    x = 319,192,773.07/18,725.40
  6. Step 6: Final answer
    x = 17,045.98

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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.