Home / 25,639.80-38,438.10-13,327.80

Finding the Fourth Proportional to 25,639.80, 38,438.10 and 13,327.80

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Solution

The fourth proportional to 25,639.80, 38,438.10 and 13,327.80 is: 19,980.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,639.80 : 38,438.10 = 13,327.80 : x
  2. Step 2: Convert to fraction form
    25,639.80/38,438.10 = 13,327.80/x
  3. Step 3: Cross multiply
    25,639.80x = 38,438.10 × 13,327.80
  4. Step 4: Simplify right side
    25,639.80x = 512,295,309.18
  5. Step 5: Solve for x
    x = 512,295,309.18/25,639.80
  6. Step 6: Final answer
    x = 19,980.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.