Home / 12,960.60-19,440.90-8,045.40

Finding the Fourth Proportional to 12,960.60, 19,440.90 and 8,045.40

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Solution

The fourth proportional to 12,960.60, 19,440.90 and 8,045.40 is: 12,068.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,960.60 : 19,440.90 = 8,045.40 : x
  2. Step 2: Convert to fraction form
    12,960.60/19,440.90 = 8,045.40/x
  3. Step 3: Cross multiply
    12,960.60x = 19,440.90 × 8,045.40
  4. Step 4: Simplify right side
    12,960.60x = 156,409,816.86
  5. Step 5: Solve for x
    x = 156,409,816.86/12,960.60
  6. Step 6: Final answer
    x = 12,068.10

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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.