Home / 28,009.59-42,020.63-12,217.19

Finding the Fourth Proportional to 28,009.59, 42,020.63 and 12,217.19

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Solution

The fourth proportional to 28,009.59, 42,020.63 and 12,217.19 is: 18,328.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.59 : 42,020.63 = 12,217.19 : x
  2. Step 2: Convert to fraction form
    28,009.59/42,020.63 = 12,217.19/x
  3. Step 3: Cross multiply
    28,009.59x = 42,020.63 × 12,217.19
  4. Step 4: Simplify right side
    28,009.59x = 513,373,749.44
  5. Step 5: Solve for x
    x = 513,373,749.44/28,009.59
  6. Step 6: Final answer
    x = 18,328.50

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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.