Home / 25,173.79-34,739.26-13,688.45

Finding the Fourth Proportional to 25,173.79, 34,739.26 and 13,688.45

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Solution

The fourth proportional to 25,173.79, 34,739.26 and 13,688.45 is: 18,889.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,173.79 : 34,739.26 = 13,688.45 : x
  2. Step 2: Convert to fraction form
    25,173.79/34,739.26 = 13,688.45/x
  3. Step 3: Cross multiply
    25,173.79x = 34,739.26 × 13,688.45
  4. Step 4: Simplify right side
    25,173.79x = 475,526,381.41
  5. Step 5: Solve for x
    x = 475,526,381.41/25,173.79
  6. Step 6: Final answer
    x = 18,889.75

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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.