Home / 28,178.76-42,231.42-15,698.28

Finding the Fourth Proportional to 28,178.76, 42,231.42 and 15,698.28

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Solution

The fourth proportional to 28,178.76, 42,231.42 and 15,698.28 is: 23,526.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.76 : 42,231.42 = 15,698.28 : x
  2. Step 2: Convert to fraction form
    28,178.76/42,231.42 = 15,698.28/x
  3. Step 3: Cross multiply
    28,178.76x = 42,231.42 × 15,698.28
  4. Step 4: Simplify right side
    28,178.76x = 662,960,655.96
  5. Step 5: Solve for x
    x = 662,960,655.96/28,178.76
  6. Step 6: Final answer
    x = 23,526.96

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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.