Home / 29,370.10-40,509.78-20,742.40

Finding the Fourth Proportional to 29,370.10, 40,509.78 and 20,742.40

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Solution

The fourth proportional to 29,370.10, 40,509.78 and 20,742.40 is: 28,609.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,370.10 : 40,509.78 = 20,742.40 : x
  2. Step 2: Convert to fraction form
    29,370.10/40,509.78 = 20,742.40/x
  3. Step 3: Cross multiply
    29,370.10x = 40,509.78 × 20,742.40
  4. Step 4: Simplify right side
    29,370.10x = 840,270,060.67
  5. Step 5: Solve for x
    x = 840,270,060.67/29,370.10
  6. Step 6: Final answer
    x = 28,609.71

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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.