Home / 13,288.71-18,337.75-7,320.25

Finding the Fourth Proportional to 13,288.71, 18,337.75 and 7,320.25

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Solution

The fourth proportional to 13,288.71, 18,337.75 and 7,320.25 is: 10,101.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.71 : 18,337.75 = 7,320.25 : x
  2. Step 2: Convert to fraction form
    13,288.71/18,337.75 = 7,320.25/x
  3. Step 3: Cross multiply
    13,288.71x = 18,337.75 × 7,320.25
  4. Step 4: Simplify right side
    13,288.71x = 134,236,914.44
  5. Step 5: Solve for x
    x = 134,236,914.44/13,288.71
  6. Step 6: Final answer
    x = 10,101.58

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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.