Home / 13,521.12-18,658.08-7,552.32

Finding the Fourth Proportional to 13,521.12, 18,658.08 and 7,552.32

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Solution

The fourth proportional to 13,521.12, 18,658.08 and 7,552.32 is: 10,421.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.12 : 18,658.08 = 7,552.32 : x
  2. Step 2: Convert to fraction form
    13,521.12/18,658.08 = 7,552.32/x
  3. Step 3: Cross multiply
    13,521.12x = 18,658.08 × 7,552.32
  4. Step 4: Simplify right side
    13,521.12x = 140,911,790.75
  5. Step 5: Solve for x
    x = 140,911,790.75/13,521.12
  6. Step 6: Final answer
    x = 10,421.61

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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.