Home / 23,190.12-31,987.80-13,752

Finding the Fourth Proportional to 23,190.12, 31,987.80 and 13,752

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Solution

The fourth proportional to 23,190.12, 31,987.80 and 13,752 is: 18,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,190.12 : 31,987.80 = 13,752 : x
  2. Step 2: Convert to fraction form
    23,190.12/31,987.80 = 13,752/x
  3. Step 3: Cross multiply
    23,190.12x = 31,987.80 × 13,752
  4. Step 4: Simplify right side
    23,190.12x = 439,896,225.60
  5. Step 5: Solve for x
    x = 439,896,225.60/23,190.12
  6. Step 6: Final answer
    x = 18,969.12

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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.