Home / 28,904.07-39,887.60-15,656.07

Finding the Fourth Proportional to 28,904.07, 39,887.60 and 15,656.07

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Solution

The fourth proportional to 28,904.07, 39,887.60 and 15,656.07 is: 21,605.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,904.07 : 39,887.60 = 15,656.07 : x
  2. Step 2: Convert to fraction form
    28,904.07/39,887.60 = 15,656.07/x
  3. Step 3: Cross multiply
    28,904.07x = 39,887.60 × 15,656.07
  4. Step 4: Simplify right side
    28,904.07x = 624,483,057.73
  5. Step 5: Solve for x
    x = 624,483,057.73/28,904.07
  6. Step 6: Final answer
    x = 21,605.37

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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.