Home / 47,190.43-70,785.65-12,130.12

Finding the Fourth Proportional to 47,190.43, 70,785.65 and 12,130.12

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Solution

The fourth proportional to 47,190.43, 70,785.65 and 12,130.12 is: 18,195.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,190.43 : 70,785.65 = 12,130.12 : x
  2. Step 2: Convert to fraction form
    47,190.43/70,785.65 = 12,130.12/x
  3. Step 3: Cross multiply
    47,190.43x = 70,785.65 × 12,130.12
  4. Step 4: Simplify right side
    47,190.43x = 858,638,428.78
  5. Step 5: Solve for x
    x = 858,638,428.78/47,190.43
  6. Step 6: Final answer
    x = 18,195.18

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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.