Home / 15,423.80-21,284.96-8,617.84

Finding the Fourth Proportional to 15,423.80, 21,284.96 and 8,617.84

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Solution

The fourth proportional to 15,423.80, 21,284.96 and 8,617.84 is: 11,892.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.80 : 21,284.96 = 8,617.84 : x
  2. Step 2: Convert to fraction form
    15,423.80/21,284.96 = 8,617.84/x
  3. Step 3: Cross multiply
    15,423.80x = 21,284.96 × 8,617.84
  4. Step 4: Simplify right side
    15,423.80x = 183,430,379.69
  5. Step 5: Solve for x
    x = 183,430,379.69/15,423.80
  6. Step 6: Final answer
    x = 11,892.68

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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.