Home / 15,633.45-21,572.16-8,918.69

Finding the Fourth Proportional to 15,633.45, 21,572.16 and 8,918.69

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Solution

The fourth proportional to 15,633.45, 21,572.16 and 8,918.69 is: 12,306.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,633.45 : 21,572.16 = 8,918.69 : x
  2. Step 2: Convert to fraction form
    15,633.45/21,572.16 = 8,918.69/x
  3. Step 3: Cross multiply
    15,633.45x = 21,572.16 × 8,918.69
  4. Step 4: Simplify right side
    15,633.45x = 192,395,266.36
  5. Step 5: Solve for x
    x = 192,395,266.36/15,633.45
  6. Step 6: Final answer
    x = 12,306.64

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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.