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Finding the Fourth Proportional to 13,445.16, 18,552.54 and 7,475.64

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Solution

The fourth proportional to 13,445.16, 18,552.54 and 7,475.64 is: 10,315.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.16 : 18,552.54 = 7,475.64 : x
  2. Step 2: Convert to fraction form
    13,445.16/18,552.54 = 7,475.64/x
  3. Step 3: Cross multiply
    13,445.16x = 18,552.54 × 7,475.64
  4. Step 4: Simplify right side
    13,445.16x = 138,692,110.13
  5. Step 5: Solve for x
    x = 138,692,110.13/13,445.16
  6. Step 6: Final answer
    x = 10,315.39

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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.