Home / 28,019.16-42,000.39-18,164.70

Finding the Fourth Proportional to 28,019.16, 42,000.39 and 18,164.70

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Solution

The fourth proportional to 28,019.16, 42,000.39 and 18,164.70 is: 27,228.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.16 : 42,000.39 = 18,164.70 : x
  2. Step 2: Convert to fraction form
    28,019.16/42,000.39 = 18,164.70/x
  3. Step 3: Cross multiply
    28,019.16x = 42,000.39 × 18,164.70
  4. Step 4: Simplify right side
    28,019.16x = 762,924,484.23
  5. Step 5: Solve for x
    x = 762,924,484.23/28,019.16
  6. Step 6: Final answer
    x = 27,228.67

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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.