Home / 13,590.27-18,753.39-9,113.22

Finding the Fourth Proportional to 13,590.27, 18,753.39 and 9,113.22

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Solution

The fourth proportional to 13,590.27, 18,753.39 and 9,113.22 is: 12,575.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.27 : 18,753.39 = 9,113.22 : x
  2. Step 2: Convert to fraction form
    13,590.27/18,753.39 = 9,113.22/x
  3. Step 3: Cross multiply
    13,590.27x = 18,753.39 × 9,113.22
  4. Step 4: Simplify right side
    13,590.27x = 170,903,768.82
  5. Step 5: Solve for x
    x = 170,903,768.82/13,590.27
  6. Step 6: Final answer
    x = 12,575.45

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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.