Home / 28,011.16-42,026.46-12,439.72

Finding the Fourth Proportional to 28,011.16, 42,026.46 and 12,439.72

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Solution

The fourth proportional to 28,011.16, 42,026.46 and 12,439.72 is: 18,663.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.16 : 42,026.46 = 12,439.72 : x
  2. Step 2: Convert to fraction form
    28,011.16/42,026.46 = 12,439.72/x
  3. Step 3: Cross multiply
    28,011.16x = 42,026.46 × 12,439.72
  4. Step 4: Simplify right side
    28,011.16x = 522,797,394.99
  5. Step 5: Solve for x
    x = 522,797,394.99/28,011.16
  6. Step 6: Final answer
    x = 18,663.90

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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.