Home / 13,445.57-18,554.64-7,477.19

Finding the Fourth Proportional to 13,445.57, 18,554.64 and 7,477.19

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Solution

The fourth proportional to 13,445.57, 18,554.64 and 7,477.19 is: 10,318.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.57 : 18,554.64 = 7,477.19 : x
  2. Step 2: Convert to fraction form
    13,445.57/18,554.64 = 7,477.19/x
  3. Step 3: Cross multiply
    13,445.57x = 18,554.64 × 7,477.19
  4. Step 4: Simplify right side
    13,445.57x = 138,736,517.43
  5. Step 5: Solve for x
    x = 138,736,517.43/13,445.57
  6. Step 6: Final answer
    x = 10,318.38

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Double scale
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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.