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Finding the Fourth Proportional to 13,445.58, 18,554.50 and 7,477.14

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Solution

The fourth proportional to 13,445.58, 18,554.50 and 7,477.14 is: 10,318.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.58 : 18,554.50 = 7,477.14 : x
  2. Step 2: Convert to fraction form
    13,445.58/18,554.50 = 7,477.14/x
  3. Step 3: Cross multiply
    13,445.58x = 18,554.50 × 7,477.14
  4. Step 4: Simplify right side
    13,445.58x = 138,734,594.13
  5. Step 5: Solve for x
    x = 138,734,594.13/13,445.58
  6. Step 6: Final answer
    x = 10,318.23

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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.