Home / 25,502.45-35,187.62-15,430.64

Finding the Fourth Proportional to 25,502.45, 35,187.62 and 15,430.64

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Solution

The fourth proportional to 25,502.45, 35,187.62 and 15,430.64 is: 21,290.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,502.45 : 35,187.62 = 15,430.64 : x
  2. Step 2: Convert to fraction form
    25,502.45/35,187.62 = 15,430.64/x
  3. Step 3: Cross multiply
    25,502.45x = 35,187.62 × 15,430.64
  4. Step 4: Simplify right side
    25,502.45x = 542,967,419.52
  5. Step 5: Solve for x
    x = 542,967,419.52/25,502.45
  6. Step 6: Final answer
    x = 21,290.79

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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.