Home / 13,558.55-18,708.64-7,590.47

Finding the Fourth Proportional to 13,558.55, 18,708.64 and 7,590.47

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Solution

The fourth proportional to 13,558.55, 18,708.64 and 7,590.47 is: 10,473.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.55 : 18,708.64 = 7,590.47 : x
  2. Step 2: Convert to fraction form
    13,558.55/18,708.64 = 7,590.47/x
  3. Step 3: Cross multiply
    13,558.55x = 18,708.64 × 7,590.47
  4. Step 4: Simplify right side
    13,558.55x = 142,007,258.14
  5. Step 5: Solve for x
    x = 142,007,258.14/13,558.55
  6. Step 6: Final answer
    x = 10,473.64

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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.