Home / 28,659.05-42,980.25-12,018.62

Finding the Fourth Proportional to 28,659.05, 42,980.25 and 12,018.62

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Solution

The fourth proportional to 28,659.05, 42,980.25 and 12,018.62 is: 18,024.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,659.05 : 42,980.25 = 12,018.62 : x
  2. Step 2: Convert to fraction form
    28,659.05/42,980.25 = 12,018.62/x
  3. Step 3: Cross multiply
    28,659.05x = 42,980.25 × 12,018.62
  4. Step 4: Simplify right side
    28,659.05x = 516,563,292.26
  5. Step 5: Solve for x
    x = 516,563,292.26/28,659.05
  6. Step 6: Final answer
    x = 18,024.44

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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.