Home / 13,230.62-18,258.74-7,565.36

Finding the Fourth Proportional to 13,230.62, 18,258.74 and 7,565.36

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Solution

The fourth proportional to 13,230.62, 18,258.74 and 7,565.36 is: 10,440.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,230.62 : 18,258.74 = 7,565.36 : x
  2. Step 2: Convert to fraction form
    13,230.62/18,258.74 = 7,565.36/x
  3. Step 3: Cross multiply
    13,230.62x = 18,258.74 × 7,565.36
  4. Step 4: Simplify right side
    13,230.62x = 138,133,812.13
  5. Step 5: Solve for x
    x = 138,133,812.13/13,230.62
  6. Step 6: Final answer
    x = 10,440.47

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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.