Home / 21,612.96-32,423.04-6,818.40

Finding the Fourth Proportional to 21,612.96, 32,423.04 and 6,818.40

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Solution

The fourth proportional to 21,612.96, 32,423.04 and 6,818.40 is: 10,228.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.96 : 32,423.04 = 6,818.40 : x
  2. Step 2: Convert to fraction form
    21,612.96/32,423.04 = 6,818.40/x
  3. Step 3: Cross multiply
    21,612.96x = 32,423.04 × 6,818.40
  4. Step 4: Simplify right side
    21,612.96x = 221,073,255.94
  5. Step 5: Solve for x
    x = 221,073,255.94/21,612.96
  6. Step 6: Final answer
    x = 10,228.74

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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.