Home / 13,289.51-18,338.69-7,320.84

Finding the Fourth Proportional to 13,289.51, 18,338.69 and 7,320.84

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Solution

The fourth proportional to 13,289.51, 18,338.69 and 7,320.84 is: 10,102.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.51 : 18,338.69 = 7,320.84 : x
  2. Step 2: Convert to fraction form
    13,289.51/18,338.69 = 7,320.84/x
  3. Step 3: Cross multiply
    13,289.51x = 18,338.69 × 7,320.84
  4. Step 4: Simplify right side
    13,289.51x = 134,254,578.70
  5. Step 5: Solve for x
    x = 134,254,578.70/13,289.51
  6. Step 6: Final answer
    x = 10,102.30

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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.