Home / 15,855.57-23,798.88-13,239.81

Finding the Fourth Proportional to 15,855.57, 23,798.88 and 13,239.81

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Solution

The fourth proportional to 15,855.57, 23,798.88 and 13,239.81 is: 19,872.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,855.57 : 23,798.88 = 13,239.81 : x
  2. Step 2: Convert to fraction form
    15,855.57/23,798.88 = 13,239.81/x
  3. Step 3: Cross multiply
    15,855.57x = 23,798.88 × 13,239.81
  4. Step 4: Simplify right side
    15,855.57x = 315,092,649.41
  5. Step 5: Solve for x
    x = 315,092,649.41/15,855.57
  6. Step 6: Final answer
    x = 19,872.68

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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.