Home / 28,186.29-42,282.23-10,421.61

Finding the Fourth Proportional to 28,186.29, 42,282.23 and 10,421.61

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Solution

The fourth proportional to 28,186.29, 42,282.23 and 10,421.61 is: 15,633.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.29 : 42,282.23 = 10,421.61 : x
  2. Step 2: Convert to fraction form
    28,186.29/42,282.23 = 10,421.61/x
  3. Step 3: Cross multiply
    28,186.29x = 42,282.23 × 10,421.61
  4. Step 4: Simplify right side
    28,186.29x = 440,648,910.99
  5. Step 5: Solve for x
    x = 440,648,910.99/28,186.29
  6. Step 6: Final answer
    x = 15,633.45

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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.