Home / 11,312.39-16,968.59-3,521.21

Finding the Fourth Proportional to 11,312.39, 16,968.59 and 3,521.21

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Solution

The fourth proportional to 11,312.39, 16,968.59 and 3,521.21 is: 5,281.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,312.39 : 16,968.59 = 3,521.21 : x
  2. Step 2: Convert to fraction form
    11,312.39/16,968.59 = 3,521.21/x
  3. Step 3: Cross multiply
    11,312.39x = 16,968.59 × 3,521.21
  4. Step 4: Simplify right side
    11,312.39x = 59,749,968.79
  5. Step 5: Solve for x
    x = 59,749,968.79/11,312.39
  6. Step 6: Final answer
    x = 5,281.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.