Home / 30,131.56-41,598.28-20,585.71

Finding the Fourth Proportional to 30,131.56, 41,598.28 and 20,585.71

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Solution

The fourth proportional to 30,131.56, 41,598.28 and 20,585.71 is: 28,419.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.56 : 41,598.28 = 20,585.71 : x
  2. Step 2: Convert to fraction form
    30,131.56/41,598.28 = 20,585.71/x
  3. Step 3: Cross multiply
    30,131.56x = 41,598.28 × 20,585.71
  4. Step 4: Simplify right side
    30,131.56x = 856,330,206.31
  5. Step 5: Solve for x
    x = 856,330,206.31/30,131.56
  6. Step 6: Final answer
    x = 28,419.71

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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.