Home / 18,439.64-25,445.86-11,281.48

Finding the Fourth Proportional to 18,439.64, 25,445.86 and 11,281.48

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Solution

The fourth proportional to 18,439.64, 25,445.86 and 11,281.48 is: 15,567.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.64 : 25,445.86 = 11,281.48 : x
  2. Step 2: Convert to fraction form
    18,439.64/25,445.86 = 11,281.48/x
  3. Step 3: Cross multiply
    18,439.64x = 25,445.86 × 11,281.48
  4. Step 4: Simplify right side
    18,439.64x = 287,066,960.67
  5. Step 5: Solve for x
    x = 287,066,960.67/18,439.64
  6. Step 6: Final answer
    x = 15,567.93

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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.