Home / 13,320.39-18,383.21-7,656.06

Finding the Fourth Proportional to 13,320.39, 18,383.21 and 7,656.06

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Solution

The fourth proportional to 13,320.39, 18,383.21 and 7,656.06 is: 10,565.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.39 : 18,383.21 = 7,656.06 : x
  2. Step 2: Convert to fraction form
    13,320.39/18,383.21 = 7,656.06/x
  3. Step 3: Cross multiply
    13,320.39x = 18,383.21 × 7,656.06
  4. Step 4: Simplify right side
    13,320.39x = 140,742,958.75
  5. Step 5: Solve for x
    x = 140,742,958.75/13,320.39
  6. Step 6: Final answer
    x = 10,565.98

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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.