Home / 20,438.46-30,646.50-6,392.40

Finding the Fourth Proportional to 20,438.46, 30,646.50 and 6,392.40

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Solution

The fourth proportional to 20,438.46, 30,646.50 and 6,392.40 is: 9,585.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,438.46 : 30,646.50 = 6,392.40 : x
  2. Step 2: Convert to fraction form
    20,438.46/30,646.50 = 6,392.40/x
  3. Step 3: Cross multiply
    20,438.46x = 30,646.50 × 6,392.40
  4. Step 4: Simplify right side
    20,438.46x = 195,904,686.60
  5. Step 5: Solve for x
    x = 195,904,686.60/20,438.46
  6. Step 6: Final answer
    x = 9,585.10

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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.