Home / 13,148.43-18,138.02-9,559.32

Finding the Fourth Proportional to 13,148.43, 18,138.02 and 9,559.32

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Solution

The fourth proportional to 13,148.43, 18,138.02 and 9,559.32 is: 13,186.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.43 : 18,138.02 = 9,559.32 : x
  2. Step 2: Convert to fraction form
    13,148.43/18,138.02 = 9,559.32/x
  3. Step 3: Cross multiply
    13,148.43x = 18,138.02 × 9,559.32
  4. Step 4: Simplify right side
    13,148.43x = 173,387,137.35
  5. Step 5: Solve for x
    x = 173,387,137.35/13,148.43
  6. Step 6: Final answer
    x = 13,186.91

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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.