Home / 15,521.67-21,419.91-8,448.08

Finding the Fourth Proportional to 15,521.67, 21,419.91 and 8,448.08

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Solution

The fourth proportional to 15,521.67, 21,419.91 and 8,448.08 is: 11,658.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,521.67 : 21,419.91 = 8,448.08 : x
  2. Step 2: Convert to fraction form
    15,521.67/21,419.91 = 8,448.08/x
  3. Step 3: Cross multiply
    15,521.67x = 21,419.91 × 8,448.08
  4. Step 4: Simplify right side
    15,521.67x = 180,957,006.17
  5. Step 5: Solve for x
    x = 180,957,006.17/15,521.67
  6. Step 6: Final answer
    x = 11,658.35

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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.