Home / 9,348.12-12,900.18-5,156.28

Finding the Fourth Proportional to 9,348.12, 12,900.18 and 5,156.28

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Solution

The fourth proportional to 9,348.12, 12,900.18 and 5,156.28 is: 7,115.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,348.12 : 12,900.18 = 5,156.28 : x
  2. Step 2: Convert to fraction form
    9,348.12/12,900.18 = 5,156.28/x
  3. Step 3: Cross multiply
    9,348.12x = 12,900.18 × 5,156.28
  4. Step 4: Simplify right side
    9,348.12x = 66,516,940.13
  5. Step 5: Solve for x
    x = 66,516,940.13/9,348.12
  6. Step 6: Final answer
    x = 7,115.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.