Home / 13,142.52-18,135.90-7,476.48

Finding the Fourth Proportional to 13,142.52, 18,135.90 and 7,476.48

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Solution

The fourth proportional to 13,142.52, 18,135.90 and 7,476.48 is: 10,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.52 : 18,135.90 = 7,476.48 : x
  2. Step 2: Convert to fraction form
    13,142.52/18,135.90 = 7,476.48/x
  3. Step 3: Cross multiply
    13,142.52x = 18,135.90 × 7,476.48
  4. Step 4: Simplify right side
    13,142.52x = 135,592,693.63
  5. Step 5: Solve for x
    x = 135,592,693.63/13,142.52
  6. Step 6: Final answer
    x = 10,317.10

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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.