Home / 13,040.64-17,971.20-9,308.16

Finding the Fourth Proportional to 13,040.64, 17,971.20 and 9,308.16

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Solution

The fourth proportional to 13,040.64, 17,971.20 and 9,308.16 is: 12,827.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,040.64 : 17,971.20 = 9,308.16 : x
  2. Step 2: Convert to fraction form
    13,040.64/17,971.20 = 9,308.16/x
  3. Step 3: Cross multiply
    13,040.64x = 17,971.20 × 9,308.16
  4. Step 4: Simplify right side
    13,040.64x = 167,278,804.99
  5. Step 5: Solve for x
    x = 167,278,804.99/13,040.64
  6. Step 6: Final answer
    x = 12,827.50

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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.