Home / 28,250.36-38,985.87-15,503.64

Finding the Fourth Proportional to 28,250.36, 38,985.87 and 15,503.64

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Solution

The fourth proportional to 28,250.36, 38,985.87 and 15,503.64 is: 21,395.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,250.36 : 38,985.87 = 15,503.64 : x
  2. Step 2: Convert to fraction form
    28,250.36/38,985.87 = 15,503.64/x
  3. Step 3: Cross multiply
    28,250.36x = 38,985.87 × 15,503.64
  4. Step 4: Simplify right side
    28,250.36x = 604,422,893.57
  5. Step 5: Solve for x
    x = 604,422,893.57/28,250.36
  6. Step 6: Final answer
    x = 21,395.23

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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.