Home / 13,588.47-18,752.09-7,620.12

Finding the Fourth Proportional to 13,588.47, 18,752.09 and 7,620.12

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Solution

The fourth proportional to 13,588.47, 18,752.09 and 7,620.12 is: 10,515.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.47 : 18,752.09 = 7,620.12 : x
  2. Step 2: Convert to fraction form
    13,588.47/18,752.09 = 7,620.12/x
  3. Step 3: Cross multiply
    13,588.47x = 18,752.09 × 7,620.12
  4. Step 4: Simplify right side
    13,588.47x = 142,893,137.95
  5. Step 5: Solve for x
    x = 142,893,137.95/13,588.47
  6. Step 6: Final answer
    x = 10,515.76

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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.