Home / 13,445.52-18,554.43-7,476.78

Finding the Fourth Proportional to 13,445.52, 18,554.43 and 7,476.78

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Solution

The fourth proportional to 13,445.52, 18,554.43 and 7,476.78 is: 10,317.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.52 : 18,554.43 = 7,476.78 : x
  2. Step 2: Convert to fraction form
    13,445.52/18,554.43 = 7,476.78/x
  3. Step 3: Cross multiply
    13,445.52x = 18,554.43 × 7,476.78
  4. Step 4: Simplify right side
    13,445.52x = 138,727,391.14
  5. Step 5: Solve for x
    x = 138,727,391.14/13,445.52
  6. Step 6: Final answer
    x = 10,317.74

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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.