Home / 28,937.16-39,928.50-18,180.36

Finding the Fourth Proportional to 28,937.16, 39,928.50 and 18,180.36

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Solution

The fourth proportional to 28,937.16, 39,928.50 and 18,180.36 is: 25,085.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,937.16 : 39,928.50 = 18,180.36 : x
  2. Step 2: Convert to fraction form
    28,937.16/39,928.50 = 18,180.36/x
  3. Step 3: Cross multiply
    28,937.16x = 39,928.50 × 18,180.36
  4. Step 4: Simplify right side
    28,937.16x = 725,914,504.26
  5. Step 5: Solve for x
    x = 725,914,504.26/28,937.16
  6. Step 6: Final answer
    x = 25,085.89

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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.