Home / 20,302.18-30,429.51-8,612.26

Finding the Fourth Proportional to 20,302.18, 30,429.51 and 8,612.26

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Solution

The fourth proportional to 20,302.18, 30,429.51 and 8,612.26 is: 12,908.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302.18 : 30,429.51 = 8,612.26 : x
  2. Step 2: Convert to fraction form
    20,302.18/30,429.51 = 8,612.26/x
  3. Step 3: Cross multiply
    20,302.18x = 30,429.51 × 8,612.26
  4. Step 4: Simplify right side
    20,302.18x = 262,066,851.79
  5. Step 5: Solve for x
    x = 262,066,851.79/20,302.18
  6. Step 6: Final answer
    x = 12,908.31

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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.