Home / 13,258.28-18,295.88-7,289.40

Finding the Fourth Proportional to 13,258.28, 18,295.88 and 7,289.40

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Solution

The fourth proportional to 13,258.28, 18,295.88 and 7,289.40 is: 10,059.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,258.28 : 18,295.88 = 7,289.40 : x
  2. Step 2: Convert to fraction form
    13,258.28/18,295.88 = 7,289.40/x
  3. Step 3: Cross multiply
    13,258.28x = 18,295.88 × 7,289.40
  4. Step 4: Simplify right side
    13,258.28x = 133,365,987.67
  5. Step 5: Solve for x
    x = 133,365,987.67/13,258.28
  6. Step 6: Final answer
    x = 10,059.07

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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.