Home / 15,678.55-21,654.22-10,633.99

Finding the Fourth Proportional to 15,678.55, 21,654.22 and 10,633.99

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Solution

The fourth proportional to 15,678.55, 21,654.22 and 10,633.99 is: 14,686.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.55 : 21,654.22 = 10,633.99 : x
  2. Step 2: Convert to fraction form
    15,678.55/21,654.22 = 10,633.99/x
  3. Step 3: Cross multiply
    15,678.55x = 21,654.22 × 10,633.99
  4. Step 4: Simplify right side
    15,678.55x = 230,270,758.94
  5. Step 5: Solve for x
    x = 230,270,758.94/15,678.55
  6. Step 6: Final answer
    x = 14,686.99

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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.