Home / 13,289.02-18,338.87-7,320.70

Finding the Fourth Proportional to 13,289.02, 18,338.87 and 7,320.70

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Solution

The fourth proportional to 13,289.02, 18,338.87 and 7,320.70 is: 10,102.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.02 : 18,338.87 = 7,320.70 : x
  2. Step 2: Convert to fraction form
    13,289.02/18,338.87 = 7,320.70/x
  3. Step 3: Cross multiply
    13,289.02x = 18,338.87 × 7,320.70
  4. Step 4: Simplify right side
    13,289.02x = 134,253,237.31
  5. Step 5: Solve for x
    x = 134,253,237.31/13,289.02
  6. Step 6: Final answer
    x = 10,102.57

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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.