Home / 18,489.81-25,515.99-10,106.31

Finding the Fourth Proportional to 18,489.81, 25,515.99 and 10,106.31

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Solution

The fourth proportional to 18,489.81, 25,515.99 and 10,106.31 is: 13,946.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,489.81 : 25,515.99 = 10,106.31 : x
  2. Step 2: Convert to fraction form
    18,489.81/25,515.99 = 10,106.31/x
  3. Step 3: Cross multiply
    18,489.81x = 25,515.99 × 10,106.31
  4. Step 4: Simplify right side
    18,489.81x = 257,872,504.90
  5. Step 5: Solve for x
    x = 257,872,504.90/18,489.81
  6. Step 6: Final answer
    x = 13,946.74

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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.