Home / 13,445.36-18,554.78-7,477.55

Finding the Fourth Proportional to 13,445.36, 18,554.78 and 7,477.55

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Solution

The fourth proportional to 13,445.36, 18,554.78 and 7,477.55 is: 10,319.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.36 : 18,554.78 = 7,477.55 : x
  2. Step 2: Convert to fraction form
    13,445.36/18,554.78 = 7,477.55/x
  3. Step 3: Cross multiply
    13,445.36x = 18,554.78 × 7,477.55
  4. Step 4: Simplify right side
    13,445.36x = 138,744,257.80
  5. Step 5: Solve for x
    x = 138,744,257.80/13,445.36
  6. Step 6: Final answer
    x = 10,319.12

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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.