Home / 11,393.24-15,730.40-7,146.05

Finding the Fourth Proportional to 11,393.24, 15,730.40 and 7,146.05

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Solution

The fourth proportional to 11,393.24, 15,730.40 and 7,146.05 is: 9,866.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,393.24 : 15,730.40 = 7,146.05 : x
  2. Step 2: Convert to fraction form
    11,393.24/15,730.40 = 7,146.05/x
  3. Step 3: Cross multiply
    11,393.24x = 15,730.40 × 7,146.05
  4. Step 4: Simplify right side
    11,393.24x = 112,410,164.13
  5. Step 5: Solve for x
    x = 112,410,164.13/11,393.24
  6. Step 6: Final answer
    x = 9,866.40

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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.