Home / 28,011.13-42,023.18-12,429.97

Finding the Fourth Proportional to 28,011.13, 42,023.18 and 12,429.97

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Solution

The fourth proportional to 28,011.13, 42,023.18 and 12,429.97 is: 18,647.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.13 : 42,023.18 = 12,429.97 : x
  2. Step 2: Convert to fraction form
    28,011.13/42,023.18 = 12,429.97/x
  3. Step 3: Cross multiply
    28,011.13x = 42,023.18 × 12,429.97
  4. Step 4: Simplify right side
    28,011.13x = 522,346,804.55
  5. Step 5: Solve for x
    x = 522,346,804.55/28,011.13
  6. Step 6: Final answer
    x = 18,647.83

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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.