Home / 25,629.40-38,411.70-18,695.80

Finding the Fourth Proportional to 25,629.40, 38,411.70 and 18,695.80

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Solution

The fourth proportional to 25,629.40, 38,411.70 and 18,695.80 is: 28,020.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,629.40 : 38,411.70 = 18,695.80 : x
  2. Step 2: Convert to fraction form
    25,629.40/38,411.70 = 18,695.80/x
  3. Step 3: Cross multiply
    25,629.40x = 38,411.70 × 18,695.80
  4. Step 4: Simplify right side
    25,629.40x = 718,137,460.86
  5. Step 5: Solve for x
    x = 718,137,460.86/25,629.40
  6. Step 6: Final answer
    x = 28,020.07

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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.