Home / 31,728.20-47,592.30-12,007.40

Finding the Fourth Proportional to 31,728.20, 47,592.30 and 12,007.40

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Solution

The fourth proportional to 31,728.20, 47,592.30 and 12,007.40 is: 18,011.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728.20 : 47,592.30 = 12,007.40 : x
  2. Step 2: Convert to fraction form
    31,728.20/47,592.30 = 12,007.40/x
  3. Step 3: Cross multiply
    31,728.20x = 47,592.30 × 12,007.40
  4. Step 4: Simplify right side
    31,728.20x = 571,459,783.02
  5. Step 5: Solve for x
    x = 571,459,783.02/31,728.20
  6. Step 6: Final answer
    x = 18,011.10

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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.