Home / 13,455.28-18,566.64-7,486.16

Finding the Fourth Proportional to 13,455.28, 18,566.64 and 7,486.16

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Solution

The fourth proportional to 13,455.28, 18,566.64 and 7,486.16 is: 10,329.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.28 : 18,566.64 = 7,486.16 : x
  2. Step 2: Convert to fraction form
    13,455.28/18,566.64 = 7,486.16/x
  3. Step 3: Cross multiply
    13,455.28x = 18,566.64 × 7,486.16
  4. Step 4: Simplify right side
    13,455.28x = 138,992,837.70
  5. Step 5: Solve for x
    x = 138,992,837.70/13,455.28
  6. Step 6: Final answer
    x = 10,329.98

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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.