Home / 13,590.64-18,754.84-7,622.30

Finding the Fourth Proportional to 13,590.64, 18,754.84 and 7,622.30

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Solution

The fourth proportional to 13,590.64, 18,754.84 and 7,622.30 is: 10,518.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.64 : 18,754.84 = 7,622.30 : x
  2. Step 2: Convert to fraction form
    13,590.64/18,754.84 = 7,622.30/x
  3. Step 3: Cross multiply
    13,590.64x = 18,754.84 × 7,622.30
  4. Step 4: Simplify right side
    13,590.64x = 142,955,016.93
  5. Step 5: Solve for x
    x = 142,955,016.93/13,590.64
  6. Step 6: Final answer
    x = 10,518.64

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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.